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Zhang L, Zheng J, Liu C, Xie Y, Lu H, Luo Q, Liu Y, Yang H, Shen K, Mai Y. Over 10% Efficient Sb 2 (S,Se) 3 Solar Cells Enabled by CsI-Doping Strategy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2310418. [PMID: 38267816 DOI: 10.1002/smll.202310418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/31/2023] [Indexed: 01/26/2024]
Abstract
Antimony selenosulfide (Sb2 (S,Se)3 ) is an emerging quasi-1D photovoltaic semiconductor with exceptional photoelectric properties. The low-symmetry chain structure contains complex defects and makes it difficult to improve electrical properties via doping method. This article reports a doping strategy to enhance the efficiency of Sb2 (S,Se)3 solar cells by using alkali halide (CsI) as the hydrothermal reaction precursor. It is found that the Cs and I ions are effectively doped and atomically coordinate with Sb ions and S/Se ions. The CsI-doping Sb2 (S,Se)3 absorbers exhibit enhanced grain morphologies and reduced trap densities. The consequential CsI-doping Sb2 (S,Se)3 based solar cells demonstrate favorable band alignment, suppressed carrier recombination, and improved device performance. An efficiency as high as 10.05% under standard AM1.5 illumination irradiance is achieved. This precursor-based alkali halide doping strategy provides a useful guidance for high-efficiency antimony selenosulfide solar cells.
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Affiliation(s)
- Lei Zhang
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Jianzha Zheng
- Institute of New Energy Technology, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 510632, China
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao, Macao SAR, 999078, China
| | - Cong Liu
- Institute of New Energy Technology, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 510632, China
| | - Yifei Xie
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Hanyu Lu
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Qinrong Luo
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Yulong Liu
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Huidong Yang
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Kai Shen
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, 510632, China
- Institute of New Energy Technology, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 510632, China
| | - Yaohua Mai
- Department of Electronic Engineering, College of Information Science and Technology, Jinan University, Guangzhou, 510632, China
- Institute of New Energy Technology, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, 510632, China
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2
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Xue YJ, Lai ZY, Lu HC, Hong JC, Tsai CL, Huang CL, Huang KH, Lu CF, Lai YY, Hsu CS, Lin JM, Chang JW, Chien SY, Lee GH, Jeng US, Cheng YJ. Unraveling the Structure-Property-Performance Relationships of Fused-Ring Nonfullerene Acceptors: Toward a C-Shaped ortho-Benzodipyrrole-Based Acceptor for Highly Efficient Organic Photovoltaics. J Am Chem Soc 2024; 146:833-848. [PMID: 38113458 DOI: 10.1021/jacs.3c11062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The high-performance Y6-based nonfullerene acceptors (NFAs) feature a C-shaped A-DA'D-A-type molecular architecture with a central electron-deficient thiadiazole (Tz) A' unit. In this work, we designed and synthesized a new A-D-A-type NFA, termed CB16, having a C-shaped ortho-benzodipyrrole-based skeleton of Y6 but with the Tz unit eliminated. When processed with nonhalogenated xylene without using any additives, the binary PM6:CB16 devices display a remarkable power conversion efficiency (PCE) of 18.32% with a high open-circuit voltage (Voc) of 0.92 V, surpassing the performance of the corresponding Y6-based devices. In contrast, similarly synthesized SB16, featuring an S-shaped para-benzodipyrrole-based skeleton, yields a low PCE of 0.15% due to the strong side-chain aggregation of SB16. The C-shaped A-DNBND-A skeleton in CB16 and the Y6-series NFAs constitutes the essential structural foundation for achieving exceptional device performance. The central Tz moiety or other A' units can be employed to finely adjust intermolecular interactions. The single-crystal X-ray structure reveals that ortho-benzodipyrrole-embedded A-DNBND-A plays an important role in the formation of a 3D elliptical network packing for efficient charge transport. Solution structures of the PM6:NFAs detected by small- and wide-angle X-ray scattering (SWAXS) indicate that removing the Tz unit in the C-shaped skeleton could reduce the self-packing of CB16, thereby enhancing the complexing and networking with PM6 in the spin-coating solution and the subsequent device film. Elucidating the structure-property-performance relationships of A-DA'D-A-type NFAs in this work paves the way for the future development of structurally simplified A-D-A-type NFAs.
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Affiliation(s)
- Yung-Jing Xue
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Ze-Yu Lai
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 300092, Taiwan
| | - Han-Cheng Lu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Jun-Cheng Hong
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Chia-Lin Tsai
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Ching-Li Huang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Kuo-Hsiu Huang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Chia-Fang Lu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Yu-Ying Lai
- Institute of Polymer Science and Engineering,National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Chain-Shu Hsu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Jhih-Min Lin
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 300092, Taiwan
| | - Je-Wei Chang
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 300092, Taiwan
| | - Su-Ying Chien
- Instrumentation Center, National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - U-Ser Jeng
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 300092, Taiwan
- Department of Chemical Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu 300044, Taiwan
- College of Semiconductor Research, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Yen-Ju Cheng
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
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3
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Royo R, Sánchez JG, Li W, Martinez-Ferrero E, Palomares E, Andreu R, Franco S. Novel Spiro-Core Dopant-Free Hole Transporting Material for Planar Inverted Perovskite Solar Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2042. [PMID: 37513053 PMCID: PMC10385314 DOI: 10.3390/nano13142042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023]
Abstract
Hole-transporting materials (HTMs) have demonstrated their crucial role in promoting charge extraction, interface recombination, and device stability in perovskite solar cells (PSCs). Herein, we present the synthesis of a novel dopant-free spiro-type fluorine core-based HTM with four ethoxytriisopropylsilane groups (Syl-SC) for inverted planar perovskite solar cells (iPSCs). The thickness of the Syl-SC influences the performance of iPSCs. The best-performing iPSC is achieved with a 0.8 mg/mL Syl-SC solution (ca. 15 nm thick) and exhibits a power conversion efficiency (PCE) of 15.77%, with Jsc = 20.00 mA/cm2, Voc = 1.006 V, and FF = 80.10%. As compared to devices based on PEDOT:PSS, the iPSCs based on Syl-SC exhibit a higher Voc, leading to a higher PCE. Additionally, it has been found that Syl-SC can more effectively suppress charge interfacial recombination in comparison to PEDOT:PSS, which results in an improvement in fill factor. Therefore, Syl-SC, a facilely processed and efficient hole-transporting material, presents a promising cost-effective alternative for inverted perovskite solar cells.
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Affiliation(s)
- Raquel Royo
- Instituto de Nanociencia y Materiales de Aragón (INMA), Departamento de Química Orgánica, CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - José G Sánchez
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology (ICIQ-BIST), Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Wenhui Li
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology (ICIQ-BIST), Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Eugenia Martinez-Ferrero
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology (ICIQ-BIST), Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Emilio Palomares
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology (ICIQ-BIST), Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010 Barcelona, Spain
| | - Raquel Andreu
- Instituto de Nanociencia y Materiales de Aragón (INMA), Departamento de Química Orgánica, CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Santiago Franco
- Instituto de Nanociencia y Materiales de Aragón (INMA), Departamento de Química Orgánica, CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
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4
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Alves Fávaro M, Ditz D, Yang J, Bergwinkl S, Ghosh AC, Stammler M, Lorentz C, Roeser J, Quadrelli EA, Thomas A, Palkovits R, Canivet J, Wisser FM. Finding the Sweet Spot of Photocatalysis─A Case Study Using Bipyridine-Based CTFs. ACS APPLIED MATERIALS & INTERFACES 2022; 14:14182-14192. [PMID: 35293203 DOI: 10.1021/acsami.1c24713] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Covalent triazine frameworks (CTFs) are a class of porous organic polymers that continuously attract growing interest because of their outstanding chemical and physical properties. However, the control of extended porous organic framework structures at the molecular scale for a precise adjustment of their properties has hardly been achieved so far. Here, we present a series of bipyridine-based CTFs synthesized through polycondensation, in which the sequence of specific building blocks is well controlled. The reported synthetic strategy allows us to tailor the physicochemical features of the CTF materials, including the nitrogen content, the apparent specific surface area, and optoelectronic properties. Based on a comprehensive analytical investigation, we demonstrate a direct correlation of the CTF bipyridine content with the material features such as the specific surface area, band gap, charge separation, and surface wettability with water. The entirety of these parameters dictates the catalytic activity as demonstrated for the photocatalytic hydrogen evolution reaction (HER). The material with the optimal balance between optoelectronic properties and highest hydrophilicity enables HER production rates of up to 7.2 mmol/(h·g) under visible light irradiation and in the presence of a platinum cocatalyst.
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Affiliation(s)
- Marcelo Alves Fávaro
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Daniel Ditz
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Jin Yang
- Fakultät II Institut für Chemie, Technische Universität Berlin, Hardenbergstrasse 40, 10623 Berlin, Germany
| | - Sebastian Bergwinkl
- Institute of Physical and Theoretical Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Ashta C Ghosh
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Michael Stammler
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Chantal Lorentz
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Jérôme Roeser
- Fakultät II Institut für Chemie, Technische Universität Berlin, Hardenbergstrasse 40, 10623 Berlin, Germany
| | - Elsje Alessandra Quadrelli
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Arne Thomas
- Fakultät II Institut für Chemie, Technische Universität Berlin, Hardenbergstrasse 40, 10623 Berlin, Germany
| | - Regina Palkovits
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Jérôme Canivet
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Florian M Wisser
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
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5
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Kim J, Koh CW, Uddin MA, Ryu KY, Jang SR, Woo HY, Lim B, Kim K. Improving the Photostability of Small-Molecule-Based Organic Photovoltaics by Providing a Charge Percolation Pathway of Crystalline Conjugated Polymer. Polymers (Basel) 2020; 12:polym12112598. [PMID: 33167422 PMCID: PMC7694356 DOI: 10.3390/polym12112598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 10/27/2020] [Accepted: 11/01/2020] [Indexed: 12/13/2022] Open
Abstract
Photostability of small-molecule (SM)-based organic photovoltaics (SM-OPVs) is greatly improved by utilizing a ternary photo-active layer incorporating a small amount of a conjugated polymer (CP). Semi-crystalline poly[(2,5-bis(2-hexyldecyloxy)phenylene)-alt-(5,6-difluoro-4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole)] (PPDT2FBT) and amorphous poly[(2,5-bis(2-decyltetradecyloxy)phenylene)-alt-(5,6-dicyano-4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole)] (PPDT2CNBT) with similar chemical structures were used for preparing SM:fullerene:CP ternary photo-active layers. The power conversion efficiency (PCE) of the ternary device with PPDT2FBT (Ternary-F) was higher than those of the ternary device with PPDT2CNBT (Ternary-CN) and a binary SM-OPV device (Binary) by 15% and 17%, respectively. The photostability of the SM-OPV was considerably improved by the addition of the crystalline CP, PPDT2FBT. Ternary-F retained 76% of its initial PCE after 1500 h of light soaking, whereas Ternary-CN and Binary retained only 38% and 17% of their initial PCEs, respectively. The electrical and morphological analyses of the SM-OPV devices revealed that the addition of the semi-crystalline CP led to the formation of percolation pathways for charge transport without disturbing the optimized bulk heterojunction morphology. The CP also suppressed trap-assisted recombination and enhanced the hole mobility in Ternary-F. The percolation pathways enabled the hole mobility of Ternary-F to remain constant during the light-soaking test. The photostability of Ternary-CN did not improve because the addition of the amorphous CP inhibited the formation of ordered SM domains.
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Affiliation(s)
- Jihee Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea; (J.K.); (K.Y.R.)
| | - Chang Woo Koh
- Department of Chemistry, Korea University, Seoul 136713, Korea; (C.W.K.); (M.A.U.)
| | - Mohammad Afsar Uddin
- Department of Chemistry, Korea University, Seoul 136713, Korea; (C.W.K.); (M.A.U.)
| | - Ka Yeon Ryu
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea; (J.K.); (K.Y.R.)
| | - Song-Rim Jang
- Future Technology Research Center, LG Sciencepark, LG Chem, 30, Magokjungang 10-ro, Gangseo-gu, Seoul 07796, Korea;
| | - Han Young Woo
- Department of Chemistry, Korea University, Seoul 136713, Korea; (C.W.K.); (M.A.U.)
- Correspondence: (H.Y.W.); (B.L.); (K.K.)
| | - Bogyu Lim
- Future Technology Research Center, LG Sciencepark, LG Chem, 30, Magokjungang 10-ro, Gangseo-gu, Seoul 07796, Korea;
- Green Fine Chemical Research Center, Advanced Convergent Chemistry Division, Korea Research Institute of Chemical Technology (KRICT), 45 Jongga-ro, Jung-gu, Ulsan 44412, Korea
- Correspondence: (H.Y.W.); (B.L.); (K.K.)
| | - Kyungkon Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea; (J.K.); (K.Y.R.)
- Correspondence: (H.Y.W.); (B.L.); (K.K.)
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6
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Shao Y, Chang Y, Zhang S, Bi M, Liu S, Zhang D, Lu S, Kan Z. Impact of Polymer Backbone Fluorination on the Charge Generation/Recombination Patterns and Vertical Phase Segregation in Bulk Heterojunction Organic Solar Cells. Front Chem 2020; 8:144. [PMID: 32195224 PMCID: PMC7066253 DOI: 10.3389/fchem.2020.00144] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/17/2020] [Indexed: 11/13/2022] Open
Abstract
Incorporating fluorine (-F) substituents along the main-chains of polymer donors and acceptors is an effective strategy toward efficient bulk-heterojunction (BHJ) solar cells. Specifically, F-substituted polymers often exhibit planar conformations, leading to favorable packing, and electronic coupling. However, the effects of fluorine substituents on the charge generation and recombination characteristics that determine the overall efficiency of BHJ active layers remain critically important issues to examine. In this report, two PBDT[2X]T polymer analogs -poly[4,8-bis((2-ethylhexyl)oxy)benzo[1,2-b:4, 5-b']dithiophene-thiophene] [PBDT[2H]T] and its F-substituted counterpart poly[4,8-bis((2-ethylhexyl)oxy)benzo[1,2-b:4,5-b']dithiophene-3,4-difluoro-thiophene] [PBDT[2F]T]-are studied to systematically examine how -F substituents impact the blend morphology, charge generation, carrier recombination and extraction in BHJ solar cells. Considering the large efficiency differences between PBDT[2H]T- and PBDT[2F]T-based BHJ devices, significant emphasis is given to characterizing the out-of-plane morphology of the blend films as vertical phase-separation characteristics are known to have dramatic effects on charge transport and carrier extraction in polymer-fullerene BHJ solar cells. Herein, we use electron energy loss spectroscopy (EELS) in tandem with charge transport characterization to examine PBDT[2X]T-fullerene blend films. Our analyses show that PBDT[2H]T and PBDT[2F]T possess very different charge generation, recombination and extraction characteristics, resulting from distinct aggregation, and phase-distribution within the BHJ blend films.
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Affiliation(s)
- Yanqiu Shao
- School of Chemistry and Chemical Engineering, Mudanjiang Normal University, Mudanjiang, China
| | - Yuying Chang
- School of Chemistry and Chemical Engineering, Mudanjiang Normal University, Mudanjiang, China.,Heilongjiang Province Key Laboratory of New Carbon-Base Functional and Superhard Material, Mudanjiang, China
| | - Suju Zhang
- School of Chemistry and Chemical Engineering, Mudanjiang Normal University, Mudanjiang, China
| | - Mingyue Bi
- School of Chemistry and Chemical Engineering, Mudanjiang Normal University, Mudanjiang, China
| | - Shengjian Liu
- Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, School of Chemistry, South China Normal University (SCNU), Guangzhou, China
| | - Daliang Zhang
- Institute of Advanced Interdisciplinary Studies, Chongqing University, Chongqing, China
| | - Shirong Lu
- Organic Semiconductor Research Center, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
| | - Zhipeng Kan
- Organic Semiconductor Research Center, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, China
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7
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Albaladejo-Siguan M, Becker-Koch D, Taylor AD, Sun Q, Lami V, Oppenheimer PG, Paulus F, Vaynzof Y. Efficient and Stable PbS Quantum Dot Solar Cells by Triple-Cation Perovskite Passivation. ACS NANO 2020; 14:384-393. [PMID: 31721556 DOI: 10.1021/acsnano.9b05848] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Solution-processed quantum dots (QDs) have a high potential for fabricating low-cost, flexible, and large-scale solar energy harvesting devices. It has recently been demonstrated that hybrid devices employing a single monovalent cation perovskite solution for PbS QD surface passivation exhibit enhanced photovoltaic performance when compared to standard ligand passivation. Herein, we demonstrate that the use of a triple cation Cs0.05(MA0.17FA0.83)0.95Pb(I0.9Br0.1)3 perovskite composition for surface passivation of the quantum dots results in highly efficient solar cells, which maintain 96% of their initial performance after 1200 h shelf storage. We confirm perovskite shell formation around the PbS nanocrystals by a range of spectroscopic techniques as well as high-resolution transmission electron microscopy. We find that the triple cation shell results in a favorable energetic alignment to the core of the dot, resulting in reduced recombination due to charge confinement without limiting transport in the active layer. Consequently, photovoltaic devices fabricated via a single-step film deposition reached a maximum AM1.5G power conversion efficiency of 11.3% surpassing most previous reports of PbS solar cells employing perovskite passivation.
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Affiliation(s)
- Miguel Albaladejo-Siguan
- Kirchhoff Institute for Physics, Heidelberg University , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
- Integrated Centre for Applied Physics and Photonic Materials and Centre for Advancing Electronics Dresden (cfaed) , Technical University of Dresden , Nöthnitzer Straße 61 , 01187 Dresden , Germany
| | - David Becker-Koch
- Kirchhoff Institute for Physics, Heidelberg University , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
- Integrated Centre for Applied Physics and Photonic Materials and Centre for Advancing Electronics Dresden (cfaed) , Technical University of Dresden , Nöthnitzer Straße 61 , 01187 Dresden , Germany
| | - Alexander D Taylor
- Kirchhoff Institute for Physics, Heidelberg University , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
- Integrated Centre for Applied Physics and Photonic Materials and Centre for Advancing Electronics Dresden (cfaed) , Technical University of Dresden , Nöthnitzer Straße 61 , 01187 Dresden , Germany
| | - Qing Sun
- Kirchhoff Institute for Physics, Heidelberg University , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
| | - Vincent Lami
- Kirchhoff Institute for Physics, Heidelberg University , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
| | - Pola Goldberg Oppenheimer
- School of Biochemical Engineering , University of Birmingham , Edgbaston , Birmingham , West Midlands B15 2TT , United Kingdom
| | - Fabian Paulus
- Kirchhoff Institute for Physics, Heidelberg University , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
- Integrated Centre for Applied Physics and Photonic Materials and Centre for Advancing Electronics Dresden (cfaed) , Technical University of Dresden , Nöthnitzer Straße 61 , 01187 Dresden , Germany
| | - Yana Vaynzof
- Kirchhoff Institute for Physics, Heidelberg University , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
- Integrated Centre for Applied Physics and Photonic Materials and Centre for Advancing Electronics Dresden (cfaed) , Technical University of Dresden , Nöthnitzer Straße 61 , 01187 Dresden , Germany
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8
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Keivanidis PE, Itskos G, Kan Z, Aluicio-Sarduy E, Goudarzi H, Kamm V, Laquai F, Zhang W, Brabec C, Floudas G, McCulloch I. Afterglow Effects as a Tool to Screen Emissive Nongeminate Charge Recombination Processes in Organic Photovoltaic Composites. ACS APPLIED MATERIALS & INTERFACES 2020; 12:2695-2707. [PMID: 31854965 DOI: 10.1021/acsami.9b16036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Disentangling temporally overlapping charge carrier recombination events in organic bulk heterojunctions by optical spectroscopy is challenging. Here, a new methodology for employing delayed luminescence spectroscopy is presented. The proposed method is capable of distinguishing between recombination of spatially separated charge carriers and trap-assisted charge recombination simply by monitoring the delayed luminescence (afterglow) of bulk heterojunctions with a quasi time-integrated detection scheme. Applied on the model composite of the donor poly(6,12-dihydro-6,6,12,12-tetraoctyl-indeno[1,2-b]fluorene-alt-benzothiadiazole) (PIF8BT) polymer and the acceptor ethyl-propyl perylene diimide (PDI) derivative, that is, PIF8BT:PDI, the luminescence of charge-transfer (CT) states created by nongeminate charge recombination on the ns to μs timescale is observed. Fluence-dependent, quasi time-integrated detection of the CT luminescence monitors exclusively emissive charge recombination events, while rejecting the contribution of other early-time emissive processes. Trap-assisted and bimolecular charge recombination channels are identified based on their distinct dependence on fluence. The importance of the two recombination channels is correlated with the layer's order and electrical properties of the corresponding devices. Four different microstructures of the PIF8BT:PDI composite obtained by thermal annealing are investigated. Thermal annealing of PIF8BT:PDI shrinks the PDI domains in parallel with the growth of the PIF8BT domains in the blend. Common to all states studied, the delayed CT luminescence signal is dominated by trap-assisted recombination. Yet, the minor fraction of fully separated charge recombination in the overall CT emission increases as the difference in the size of the donor and acceptor domains in the PIF8BT:PDI blend becomes larger. Electric field-induced quenching measurements on complete PIF8BT:PDI devices confirm quantitatively the dominance of emissive trap-limited charge recombination and demonstrates that only 40% of the PIF8BT/PDI CT luminescence comes from the recombination of fully-separated charges, taking place within 200 ns after photoexcitation. The method is applicable to other nonfullerene acceptor blends beyond the system discussed here, if their CT state luminescence can be monitored.
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Affiliation(s)
- Panagiotis E Keivanidis
- Device Technology and Chemical Physics Lab, Department of Mechanical Engineering and Materials Science and Engineering , Cyprus University of Technology , Limassol 3041 , Cyprus
- Centre for Nano Science and Technology @PoliMi , Fondazione Istituto Italiano di Tecnologia , Via Pascoli 70/3 , Milano 20133 , Italy
| | - Grigorios Itskos
- Department of Physics, Experimental Condensed Matter Physics Laboratory , University of Cyprus , Nicosia 1678 , Cyprus
| | - Zhipeng Kan
- Centre for Nano Science and Technology @PoliMi , Fondazione Istituto Italiano di Tecnologia , Via Pascoli 70/3 , Milano 20133 , Italy
| | - Eduardo Aluicio-Sarduy
- Centre for Nano Science and Technology @PoliMi , Fondazione Istituto Italiano di Tecnologia , Via Pascoli 70/3 , Milano 20133 , Italy
| | - Hossein Goudarzi
- Centre for Nano Science and Technology @PoliMi , Fondazione Istituto Italiano di Tecnologia , Via Pascoli 70/3 , Milano 20133 , Italy
| | - Valentin Kamm
- Max Planck Institute for Polymer Research , Ackermannweg 10 , Mainz D-55128 , Germany
| | - Frédéric Laquai
- KAUST Solar Center (KSC), Physical Sciences and Engineering Division (PSE) , King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900 , Kingdom of Saudi Arabia
| | - Weimin Zhang
- KAUST Solar Center (KSC), Physical Sciences and Engineering Division (PSE) , King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900 , Kingdom of Saudi Arabia
- Department of Chemistry and Centre for Plastic Electronics , Imperial College London , London SW7 2AZ , United Kingdom
| | - Christoph Brabec
- Institute of Materials for Electronics and Energy Technology (I-MEET) , Friedrich-Alexander-University Erlangen-Nuremberg , Martensstraße 7 , Erlangen 91058 , Germany
- Bavarian Center for Applied Energy Research (ZAE Bayern) , Haberstrasse 2a , Erlangen 91058 , Germany
| | - George Floudas
- Max Planck Institute for Polymer Research , Ackermannweg 10 , Mainz D-55128 , Germany
- Department of Physics , University of Ioannina , Ioannina 451 10 , Greece
| | - Iain McCulloch
- KAUST Solar Center (KSC), Physical Sciences and Engineering Division (PSE) , King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900 , Kingdom of Saudi Arabia
- Department of Chemistry and Centre for Plastic Electronics , Imperial College London , London SW7 2AZ , United Kingdom
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9
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Tian J, Xue Q, Tang X, Chen Y, Li N, Hu Z, Shi T, Wang X, Huang F, Brabec CJ, Yip HL, Cao Y. Dual Interfacial Design for Efficient CsPbI 2 Br Perovskite Solar Cells with Improved Photostability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1901152. [PMID: 30972830 DOI: 10.1002/adma.201901152] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/18/2019] [Indexed: 05/05/2023]
Abstract
A synergic interface design is demonstrated for photostable inorganic mixed-halide perovskite solar cells (PVSCs) by applying an amino-functionalized polymer (PN4N) as cathode interlayer and a dopant-free hole-transporting polymer poly[5,5'-bis(2-butyloctyl)-(2,2'-bithiophene)-4,4'-dicarboxylate-alt-5,5'-2,2'-bithiophene] (PDCBT) as anode interlayer. First, the interfacial dipole formed at the cathode interface reduces the workfunction of SnO2 , while PDCBT with deeper-lying highest occupied molecular orbital (HOMO) level provides a better energy-level matching at the anode, leading to a significant enhancement in open-circuit voltage (Voc ) of the PVSCs. Second, the PN4N layer can also tune the surface wetting property to promote the growth of high-quality all-inorganic perovskite films with larger grain size and higher crystallinity. Most importantly, both theoretical and experimental results reveal that PN4N and PDCBT can interact strongly with the perovskite crystal, which effectively passivates the electronic surface trap states and suppresses the photoinduced halide segregation of CsPbI2 Br films. Therefore, the optimized CsPbI2 Br PVSCs exhibit reduced interfacial recombination with efficiency over 16%, which is one of the highest efficiencies reported for all-inorganic PVSCs. A high photostability with a less than 10% efficiency drop is demonstrated for the CsPbI2 Br PVSCs with dual interfacial modifications under continuous 1 sun equivalent illumination for 400 h.
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Affiliation(s)
- Jingjing Tian
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Qifan Xue
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Xiaofeng Tang
- Institute of Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-University Erlangen-Nuremberg, Martensstraße 7, 91058, Erlangen, Germany
| | - Yuxuan Chen
- South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China
| | - Ning Li
- Institute of Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-University Erlangen-Nuremberg, Martensstraße 7, 91058, Erlangen, Germany
- National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, 450002, P. R. China
| | - Zhicheng Hu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Tingting Shi
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, 510632, P. R. China
| | - Xin Wang
- South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China
| | - Fei Huang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Christoph J Brabec
- Institute of Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-University Erlangen-Nuremberg, Martensstraße 7, 91058, Erlangen, Germany
| | - Hin-Lap Yip
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
- Innovation Center of Printed Photovoltaics, South China Institute of Collaborative Innovation, Dongguan, 523808, P. R. China
| | - Yong Cao
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
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10
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Ding C, Zhang Y, Liu F, Nakazawa N, Huang Q, Hayase S, Ogomi Y, Toyoda T, Wang R, Shen Q. Recombination Suppression in PbS Quantum Dot Heterojunction Solar Cells by Energy-Level Alignment in the Quantum Dot Active Layers. ACS APPLIED MATERIALS & INTERFACES 2018; 10:26142-26152. [PMID: 28862833 DOI: 10.1021/acsami.7b06552] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Using spatial energy-level gradient engineering with quantum dots (QDs) of different sizes to increase the generated carrier collection at the junction of a QD heterojunction solar cell (QDHSC) is a hopeful route for improving the energy-conversion efficiency. However, the results of current related research have shown that a variable band-gap structure in a QDHSC will create an appreciable increase, not in the illumination current density, but rather in the fill factor. In addition, there are a lack of studies on the mechanism of the effect of these graded structures on the photovoltaic performance of QDHSCs. This study presents the development of air atmosphere solution-processed TiO2/PbS QDs/Au QDHSCs by engineering the energy-level alignment (ELA) of the active layer via the use of a sorted order of differently sized QD layers (four QD sizes). In comparison to the ungraded device (without the ELA), the optimized graded architecture (containing the ELA) solar cells exhibited a great increase (21.4%) in short-circuit current density ( Jsc). As a result, a Jsc value greater than 30 mA/cm2 has been realized in planar, thinner absorption layer (∼300 nm) PbS QDHSCs, and the open-circuit voltage ( Voc) and power-conversion efficiency (PCE) were also improved. Through characterization by the light intensity dependences of the Jsc and Voc and transient photovoltage decay, we find that (i) the ELA structure, serving as an electron-blocking layer, reduces the interfacial recombination at the PbS/anode interface, and (ii) the ELA structure can drive more carriers toward the desirable collection electrode, and the additional carriers can fill the trap states, reducing the trap-assisted recombination in the PbS QDHSCs. This work has clearly elucidated the mechanism of the recombination suppression in the graded QDHSCs and demonstrated the effects of ELA structure on the improvement of Jsc. The charge recombination mechanisms characterized in this work would be able to shed light on further improvements of QDHSCs, which could even benefit other types of solar cells.
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Affiliation(s)
- Chao Ding
- Graduate School of Informatics and Engineering , The University of Electro-Communications , 1-5-1 Chofugaoka , Chofu , Tokyo 182-8585 , Japan
- China Scholarship Council, Level 13, Building A3, No.9 Chegongzhuang Avenue , Beijing 100044 , China
| | - Yaohong Zhang
- Graduate School of Informatics and Engineering , The University of Electro-Communications , 1-5-1 Chofugaoka , Chofu , Tokyo 182-8585 , Japan
| | - Feng Liu
- Graduate School of Informatics and Engineering , The University of Electro-Communications , 1-5-1 Chofugaoka , Chofu , Tokyo 182-8585 , Japan
| | - Naoki Nakazawa
- Graduate School of Informatics and Engineering , The University of Electro-Communications , 1-5-1 Chofugaoka , Chofu , Tokyo 182-8585 , Japan
| | - Qingxun Huang
- Graduate School of Informatics and Engineering , The University of Electro-Communications , 1-5-1 Chofugaoka , Chofu , Tokyo 182-8585 , Japan
| | - Shuzi Hayase
- Graduate School of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
- CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho , Kawaguchi , Saitama 332-0012 , Japan
| | - Yuhei Ogomi
- Graduate School of Life Science and Systems Engineering , Kyushu Institute of Technology , 2-4 Hibikino , Wakamatsu-ku, Kitakyushu , Fukuoka 808-0196 , Japan
| | - Taro Toyoda
- Graduate School of Informatics and Engineering , The University of Electro-Communications , 1-5-1 Chofugaoka , Chofu , Tokyo 182-8585 , Japan
- CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho , Kawaguchi , Saitama 332-0012 , Japan
| | - Ruixiang Wang
- Beijing Engineering Research Centre of Sustainable Energy and Buildings , Beijing University of Civil Engineering and Architecture , No.15 Yongyuan Road , Huangcun, Daxing, Beijing 102616 , China
| | - Qing Shen
- Graduate School of Informatics and Engineering , The University of Electro-Communications , 1-5-1 Chofugaoka , Chofu , Tokyo 182-8585 , Japan
- CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho , Kawaguchi , Saitama 332-0012 , Japan
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11
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Yan L, Xue Q, Liu M, Zhu Z, Tian J, Li Z, Chen Z, Chen Z, Yan H, Yip HL, Cao Y. Interface Engineering for All-Inorganic CsPbI 2 Br Perovskite Solar Cells with Efficiency over 14. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1802509. [PMID: 29971864 DOI: 10.1002/adma.201802509] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/06/2018] [Indexed: 06/08/2023]
Abstract
In this work, a SnO2 /ZnO bilayered electron transporting layer (ETL) aimed to achieve low energy loss and large open-circuit voltage (Voc ) for high-efficiency all-inorganic CsPbI2 Br perovskite solar cells (PVSCs) is introduced. The high-quality CsPbI2 Br film with regular crystal grains and full coverage can be realized on the SnO2 /ZnO surface. The higher-lying conduction band minimum of ZnO facilitates desirable cascade energy level alignment between the perovskite and SnO2 /ZnO bilayered ETL with superior electron extraction capability, resulting in a suppressed interfacial trap-assisted recombination with lower charge recombination rate and greater charge extraction efficiency. The as-optimized all-inorganic PVSC delivers a high Voc of 1.23 V and power conversion efficiency (PCE) of 14.6%, which is one of the best efficiencies reported for the Cs-based all-inorganic PVSCs to date. More importantly, decent thermal stability with only 20% PCE loss is demonstrated for the SnO2 /ZnO-based CsPbI2 Br PVSCs after being heated at 85 °C for 300 h. These findings provide important interface design insights that will be crucial to further improve the efficiency of all-inorganic PVSCs in the future.
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Affiliation(s)
- Lei Yan
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Qifan Xue
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Meiyue Liu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Zonglong Zhu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, 999077, Hong Kong
| | - Jingjing Tian
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Zhenchao Li
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Zhen Chen
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Ziming Chen
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - He Yan
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, 999077, Hong Kong
| | - Hin-Lap Yip
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
- Innovation Center for Printed Photovoltaics, South China Institute of Collaborative Innovation, Dongguan, 523808, P. R. China
| | - Yong Cao
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
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12
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Wen X, Chen C, Lu S, Li K, Kondrotas R, Zhao Y, Chen W, Gao L, Wang C, Zhang J, Niu G, Tang J. Vapor transport deposition of antimony selenide thin film solar cells with 7.6% efficiency. Nat Commun 2018; 9:2179. [PMID: 29872054 PMCID: PMC5988661 DOI: 10.1038/s41467-018-04634-6] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 04/19/2018] [Indexed: 12/23/2022] Open
Abstract
Antimony selenide is an emerging promising thin film photovoltaic material thanks to its binary composition, suitable bandgap, high absorption coefficient, inert grain boundaries and earth-abundant constituents. However, current devices produced from rapid thermal evaporation strategy suffer from low-quality film and unsatisfactory performance. Herein, we develop a vapor transport deposition technique to fabricate antimony selenide films, a technique that enables continuous and low-cost manufacturing of cadmium telluride solar cells. We improve the crystallinity of antimony selenide films and then successfully produce superstrate cadmium sulfide/antimony selenide solar cells with a certified power conversion efficiency of 7.6%, a net 2% improvement over previous 5.6% record of the same device configuration. We analyze the deep defects in antimony selenide solar cells, and find that the density of the dominant deep defects is reduced by one order of magnitude using vapor transport deposition process. Antimony selenide possess several advantages for solar cell applications but state-of-the-art vapor transport deposition methods suffer from poor film quality. Here Wen et al. develop a fast and cheap method to reduce the defect density by 10 times and achieve a certified power conversion efficiency of 7.6%.
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Affiliation(s)
- Xixing Wen
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Chao Chen
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Shuaicheng Lu
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Kanghua Li
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Rokas Kondrotas
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Yang Zhao
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Wenhao Chen
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Liang Gao
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Chong Wang
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Jun Zhang
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Guangda Niu
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China.,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China
| | - Jiang Tang
- Sargent Joint Research Center, Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, China. .,Shenzhen R&D Center of Huazhong University of Science and Technology, Shenzhen, 518000, China.
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13
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Yao X, Qi J, Xu W, Jiang X, Gong X, Cao Y. Cesium-Doped Vanadium Oxide as the Hole Extraction Layer for Efficient Perovskite Solar Cells. ACS OMEGA 2018; 3:1117-1125. [PMID: 31457954 PMCID: PMC6641240 DOI: 10.1021/acsomega.7b01944] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 01/17/2018] [Indexed: 06/09/2023]
Abstract
In this study, we report the utilization of low-temperature solution-processed Cs-doped VOX thin films as the hole extraction layers (HELs) in perovskite solar cells (PSCs). It is found that the VOX:yCs (where y is the mole ratio of Cs versus V and y = 0.1, 0.3, and 0.5) thin films possess better electrical conductivities than that of the pristine VOX thin film. As a result, the PSCs incorporated with the VOX:yCs HEL exhibit large fill factors and high short-circuit currents, with consequently high power conversion efficiencies, which is more than 30% enhancement as compared with pristine VOX HEL. Our studies provide a facial way to enhance the electrical conductivity of the hole extraction layer for boosting device performance of perovskite solar cells.
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Affiliation(s)
- Xiang Yao
- Institute
of Polymer Optoelectronic Materials and Devices, State Key Laboratory
of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Jun Qi
- Institute
of Polymer Optoelectronic Materials and Devices, State Key Laboratory
of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Wenzhan Xu
- Institute
of Polymer Optoelectronic Materials and Devices, State Key Laboratory
of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Xiaofang Jiang
- Institute
of Polymer Optoelectronic Materials and Devices, State Key Laboratory
of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, P. R. China
| | - Xiong Gong
- Institute
of Polymer Optoelectronic Materials and Devices, State Key Laboratory
of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, P. R. China
- Department
of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Yong Cao
- Institute
of Polymer Optoelectronic Materials and Devices, State Key Laboratory
of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, P. R. China
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14
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Cho K, Kim J, Yoon SY, Ryu KY, Jang SR, Lim B, Kim K. Reducing Trap-Assisted Recombination in Small Organic Molecule-Based Photovoltaics by the Addition of a Conjugated Block Copolymer. Macromol Rapid Commun 2017; 39. [DOI: 10.1002/marc.201700630] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 10/14/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Kyuwan Cho
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 120-750 South Korea
| | - Jinseck Kim
- Future Technology Research Center; Corporate R&D; LG Chem R&D Campus Daejeon; 188 Moonji-ro Yuseong-gu Daejeon 34122 South Korea
| | - So Yeon Yoon
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 120-750 South Korea
| | - Ka Yeon Ryu
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 120-750 South Korea
| | - Song-Rim Jang
- Future Technology Research Center; Corporate R&D; LG Chem R&D Campus Daejeon; 188 Moonji-ro Yuseong-gu Daejeon 34122 South Korea
| | - Bogyu Lim
- Future Technology Research Center; Corporate R&D; LG Chem R&D Campus Daejeon; 188 Moonji-ro Yuseong-gu Daejeon 34122 South Korea
| | - Kyungkon Kim
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 120-750 South Korea
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15
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Jia T, Sun C, Xu R, Chen Z, Yin Q, Jin Y, Yip HL, Huang F, Cao Y. Naphthalene Diimide Based n-Type Conjugated Polymers as Efficient Cathode Interfacial Materials for Polymer and Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:36070-36081. [PMID: 28948767 DOI: 10.1021/acsami.7b10365] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A series of naphthalene diimide (NDI) based n-type conjugated polymers with amino-functionalized side groups and backbones were synthesized and used as cathode interlayers (CILs) in polymer and perovskite solar cells. Because of controllable amine side groups, all the resulting polymers exhibited distinct electronic properties such as oxidation potential of side chains, charge carrier mobilities, self-doping behaviors, and interfacial dipoles. The influences of the chemical variation of amine groups on the cathode interfacial effects were further investigated in both polymer and perovskite solar cells. We found that the decreased electron-donating property and enhanced steric hindrance of amine side groups substantially weaken the capacities of altering the work function of the cathode and trap passivation of the perovskite film, which induced ineffective interfacial modifications and declining device performance. Moreover, with further improvement of the backbone design through the incorporation of a rigid acetylene spacer, the resulting polymers substantially exhibited an enhanced electron-transporting property. Upon use as CILs, high power conversion efficiencies (PCEs) of 10.1% and 15.2% were, respectively, achieved in polymer and perovskite solar cells. Importantly, these newly developed n-type polymers were allowed to be processed over a broad thickness range of CILs in photovoltaic devices, and a prominent PCE of over 8% for polymer solar cells and 13.5% for perovskite solar cells can be achieved with the thick interlayers over 100 nm, which is beneficial for roll-to-roll coating processes. Our findings contribute toward a better understanding of the structure-performance relationship between CIL material design and solar cell performance, and provide important insights and guidelines for the design of high-performance n-type CIL materials for organic and perovskite optoelectronic devices.
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Affiliation(s)
- Tao Jia
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P. R. China
| | - Chen Sun
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P. R. China
| | - Rongguo Xu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P. R. China
| | - Zhiming Chen
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P. R. China
| | - Qingwu Yin
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P. R. China
| | - Yaocheng Jin
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P. R. China
| | - Hin-Lap Yip
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P. R. China
| | - Fei Huang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P. R. China
| | - Yong Cao
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology , Guangzhou 510640, P. R. China
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16
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Zhang M, Wang J, Li L, Zheng G, Liu K, Qin M, Zhou H, Zhan X. High-Mobility p-Type Organic Semiconducting Interlayer Enhancing Efficiency and Stability of Perovskite Solar Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2017; 4:1700025. [PMID: 28932662 PMCID: PMC5604372 DOI: 10.1002/advs.201700025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Indexed: 05/28/2023]
Abstract
A high-mobility p-type organic semiconductor based on benzodithiophene and diketopyrrolopyrrole with linear alkylthio substituents (BDTS-2DPP) is used as a dual function interfacial layer to modify the interface of perovskite/2,2',7,7'-tetrakis(N,N'-di-p-methoxyphenylamine)-9,9'-spirobifluorene in planar perovskite solar cells. The BDTS-2DPP layer can remarkably passivate the surface defects of perovskite through the formation of Lewis adduct between the under-coordinated Pb atoms in perovskite and S atoms in BDTS-2DPP, and also shows efficient hole extraction and transfer properties. The devices with BDTS-2DPP interlayer show a peak power conversion efficiency of 18.2%, which is higher than that of reference devices without the BDTS-2DPP interlayer (16.9%). Moreover, the hydrophobic BDTS-2DPP interlayer effectively protects the perovskite against moisture, leading to enhanced device stability.
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Affiliation(s)
- Mingyu Zhang
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
| | - Jiayu Wang
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
| | - Liang Li
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
| | - Guanhaojie Zheng
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
| | - Kuan Liu
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
| | - Meng Qin
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
| | - Huanping Zhou
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
| | - Xiaowei Zhan
- Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing100871P. R. China
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17
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Kisslinger R, Hua W, Shankar K. Bulk Heterojunction Solar Cells Based on Blends of Conjugated Polymers with II⁻VI and IV⁻VI Inorganic Semiconductor Quantum Dots. Polymers (Basel) 2017; 9:E35. [PMID: 30970717 PMCID: PMC6431844 DOI: 10.3390/polym9020035] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 01/16/2017] [Accepted: 01/18/2017] [Indexed: 01/06/2023] Open
Abstract
Bulk heterojunction solar cells based on blends of quantum dots and conjugated polymers are a promising configuration for obtaining high-efficiency, cheaply fabricated solution-processed photovoltaic devices. Such devices are of significant interest as they have the potential to leverage the advantages of both types of materials, such as the high mobility, band gap tunability and possibility of multiple exciton generation in quantum dots together with the high mechanical flexibility and large molar extinction coefficient of conjugated polymers. Despite these advantages, the power conversion efficiency (PCE) of these hybrid devices has remained relatively low at around 6%, well behind that of all-organic or all-inorganic solar cells. This is attributed to major challenges that still need to be overcome before conjugated polymer⁻quantum dot blends can be considered viable for commercial application, such as controlling the film morphology and interfacial structure to ensure efficient charge transfer and charge transport. In this work, we present our findings with respect to the recent development of bulk heterojunctions made from conjugated polymer⁻quantum dot blends, list the ongoing strategies being attempted to improve performance, and highlight the key areas of research that need to be pursued to further develop this technology.
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Affiliation(s)
- Ryan Kisslinger
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, Canada.
| | - Weidi Hua
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, Canada.
| | - Karthik Shankar
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, Canada.
- National Research Council Canada National Institute for Nanotechnology, 11421 Saskatchewan Drive NW, Edmonton, AB T6G 2M9, Canada.
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18
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Fernández Garrillo PA, Borowik Ł, Caffy F, Demadrille R, Grévin B. Photo-Carrier Multi-Dynamical Imaging at the Nanometer Scale in Organic and Inorganic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2016; 8:31460-31468. [PMID: 27762134 DOI: 10.1021/acsami.6b11423] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Investigating the photocarrier dynamics in nanostructured and heterogeneous energy materials is of crucial importance from both fundamental and technological points of view. Here, we demonstrate how noncontact atomic force microscopy combined with Kelvin probe force microscopy under frequency-modulated illumination can be used to simultaneously image the surface photopotential dynamics at different time scales with a sub-10 nm lateral resolution. The basic principle of the method consists in the acquisition of spectroscopic curves of the surface potential as a function of the illumination frequency modulation on a two-dimensional grid. We show how this frequency-spectroscopy can be used to probe simultaneously the charging rate and several decay processes involving short-lived and long-lived carriers. With this approach, dynamical images of the trap-filling, trap-delayed recombination and nongeminate recombination processes have been acquired in nanophase segregated organic donor-acceptor bulk heterojunction thin films. Furthermore, the spatial variation of the minority carrier lifetime has been imaged in polycrystalline silicon thin films. These results establish two-dimensional multidynamical photovoltage imaging as a universal tool for local investigations of the photocarrier dynamics in photoactive materials and devices.
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Affiliation(s)
- Pablo A Fernández Garrillo
- Université Grenoble Alpes , F-38000 Grenoble, France
- CEA , LETI, MINATEC Campus, F-38054 Grenoble, France
- INAC-SPrAM, CEA, CNRS, Université Grenoble Alpes , F-38000 Grenoble, France
| | - Łukasz Borowik
- Université Grenoble Alpes , F-38000 Grenoble, France
- CEA , LETI, MINATEC Campus, F-38054 Grenoble, France
| | - Florent Caffy
- INAC-SPrAM, CEA, CNRS, Université Grenoble Alpes , F-38000 Grenoble, France
| | - Renaud Demadrille
- INAC-SPrAM, CEA, CNRS, Université Grenoble Alpes , F-38000 Grenoble, France
| | - Benjamin Grévin
- INAC-SPrAM, CEA, CNRS, Université Grenoble Alpes , F-38000 Grenoble, France
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19
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Correlation between CdSe QD Synthesis, Post-Synthetic Treatment, and BHJ Hybrid Solar Cell Performance. NANOMATERIALS 2016; 6:nano6060115. [PMID: 28335243 PMCID: PMC5302636 DOI: 10.3390/nano6060115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/01/2016] [Accepted: 06/06/2016] [Indexed: 11/17/2022]
Abstract
In this publication we show that the procedure to synthesize nanocrystals and the post-synthetic nanocrystal ligand sphere treatment have a great influence not only on the immediate performance of hybrid bulk heterojunction solar cells, but also on their thermal, long-term, and air stability. We herein demonstrate this for the particular case of spherical CdSe nanocrystals, post-synthetically treated with a hexanoic acid based treatment. We observe an influence from the duration of this post-synthetic treatment on the nanocrystal ligand sphere size, and also on the solar cell performance. By tuning the post-synthetic treatment to a certain degree, optimal device performance can be achieved. Moreover, we show how to effectively adapt the post-synthetic nanocrystal treatment protocol to different nanocrystal synthesis batches, hence increasing the reproducibility of hybrid nanocrystal:polymer bulk-heterojunction solar cells, which usually suffers due to the fluctuations in nanocrystal quality of different synthesis batches and synthesis procedures.
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20
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Zappia S, Di Mauro AE, Mastria R, Rizzo A, Curri ML, Striccoli M, Destri S. Rod-coil block copolymer as nanostructuring compatibilizer for efficient CdSe NCs/PCPDTBT hybrid solar cells. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.03.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Dong S, Wan Y, Wang Y, Yang Y, Wang Y, Zhang X, Cao H, Qin W, Yang L, Yao C, Ge Z, Yin S. Polyethylenimine as a dual functional additive for electron transporting layer in efficient solution processed planar heterojunction perovskite solar cells. RSC Adv 2016. [DOI: 10.1039/c6ra09976a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The device performance is enhanced by doping a small percentage of polyethylenimine (PEI) into the PCBM.
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22
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Armstrong CL, Price MB, Muñoz-Rojas D, Davis NJKL, Abdi-Jalebi M, Friend RH, Greenham NC, MacManus-Driscoll JL, Böhm ML, Musselman KP. Influence of an Inorganic Interlayer on Exciton Separation in Hybrid Solar Cells. ACS NANO 2015; 9:11863-71. [PMID: 26548399 PMCID: PMC4690195 DOI: 10.1021/acsnano.5b05934] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 11/08/2015] [Indexed: 05/26/2023]
Abstract
It has been shown that in hybrid polymer-inorganic photovoltaic devices not all the photogenerated excitons dissociate at the interface immediately, but can instead exist temporarily as bound charge pairs (BCPs). Many of these BCPs do not contribute to the photocurrent, as their long lifetime as a bound species promotes various charge carrier recombination channels. Fast and efficient dissociation of BCPs is therefore considered a key challenge in improving the performance of polymer-inorganic cells. Here we investigate the influence of an inorganic energy cascading Nb2O5 interlayer on the charge carrier recombination channels in poly(3-hexylthiophene-2,5-diyl) (P3HT)-TiO2 and PbSe colloidal quantum dot-TiO2 photovoltaic devices. We demonstrate that the additional Nb2O5 film leads to a suppression of BCP formation at the heterojunction of the P3HT cells and also a reduction in the nongeminate recombination mechanisms in both types of cells. Furthermore, we provide evidence that the reduction in nongeminate recombination in the P3HT-TiO2 devices is due in part to the passivation of deep midgap trap states in the TiO2, which prevents trap-assisted Shockley-Read-Hall recombination. Consequently a significant increase in both the open-circuit voltage and the short-circuit current was achieved, in particular for P3HT-based solar cells, where the power conversion efficiency increased by 39%.
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Affiliation(s)
- Claire L. Armstrong
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, CB3 0FS, Cambridge, U.K.
| | - Michael B. Price
- Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge, CB3 0HE, U.K.
| | - David Muñoz-Rojas
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, CB3 0FS, Cambridge, U.K.
- Laboratoire des Matériaux et du Génie Physique, Université Grenoble-Alpes, CNRS, 3 Parvis Louis Néel, 38016 Grenoble, France
| | | | - Mojtaba Abdi-Jalebi
- Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge, CB3 0HE, U.K.
| | - Richard H. Friend
- Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge, CB3 0HE, U.K.
| | - Neil C. Greenham
- Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge, CB3 0HE, U.K.
| | - Judith L. MacManus-Driscoll
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, CB3 0FS, Cambridge, U.K.
| | - Marcus L. Böhm
- Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge, CB3 0HE, U.K.
| | - Kevin P. Musselman
- Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge, CB3 0HE, U.K.
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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23
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Sun Z, Sitbon G, Pons T, Bakulin AA, Chen Z. Reduced Carrier Recombination in PbS - CuInS2 Quantum Dot Solar Cells. Sci Rep 2015; 5:10626. [PMID: 26024021 PMCID: PMC4448528 DOI: 10.1038/srep10626] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 04/22/2015] [Indexed: 11/09/2022] Open
Abstract
Energy loss due to carrier recombination is among the major factors limiting the performance of TiO2/PbS colloidal quantum dot (QD) heterojunction solar cells. In this work, enhanced photocurrent is achieved by incorporating another type of hole-transporting QDs, Zn-doped CuInS2 (Zn-CIS) QDs into the PbS QD matrix. Binary QD solar cells exhibit a reduced charge recombination associated with the spatial charge separation between these two types of QDs. A ~30% increase in short-circuit current density and a ~20% increase in power conversion efficiency are observed in binary QD solar cells compared to cells built from PbS QDs only. In agreement with the charge transfer process identified through ultrafast pump/probe spectroscopy between these two QD components, transient photovoltage characteristics of single-component and binary QDs solar cells reveal longer carrier recombination time constants associated with the incorporation of Zn-CIS QDs. This work presents a straightforward, solution-processed method based on the incorporation of another QDs in the PbS QD matrix to control the carrier dynamics in colloidal QD materials and enhance solar cell performance.
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Affiliation(s)
- Zhenhua Sun
- 1] LPEM, PSL Research University, ESPCI-ParisTech, 10 rue Vauquelin, F-75231 Paris Cedex 5, France [2] CNRS, UMR 8213, F-75005 Paris, France [3] Sorbonne Universités, UPMC Univ Paris 06, F-75005 Paris, France
| | - Gary Sitbon
- 1] LPEM, PSL Research University, ESPCI-ParisTech, 10 rue Vauquelin, F-75231 Paris Cedex 5, France [2] CNRS, UMR 8213, F-75005 Paris, France [3] Sorbonne Universités, UPMC Univ Paris 06, F-75005 Paris, France
| | - Thomas Pons
- 1] LPEM, PSL Research University, ESPCI-ParisTech, 10 rue Vauquelin, F-75231 Paris Cedex 5, France [2] CNRS, UMR 8213, F-75005 Paris, France [3] Sorbonne Universités, UPMC Univ Paris 06, F-75005 Paris, France
| | - Artem A Bakulin
- FOM Institute AMOLF, Science Park 104, Amsterdam 1098 XG, The Netherlands
| | - Zhuoying Chen
- 1] LPEM, PSL Research University, ESPCI-ParisTech, 10 rue Vauquelin, F-75231 Paris Cedex 5, France [2] CNRS, UMR 8213, F-75005 Paris, France [3] Sorbonne Universités, UPMC Univ Paris 06, F-75005 Paris, France
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24
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Eck M, Pham CV, Züfle S, Neukom M, Sessler M, Scheunemann D, Erdem E, Weber S, Borchert H, Ruhstaller B, Krüger M. Improved efficiency of bulk heterojunction hybrid solar cells by utilizing CdSe quantum dot-graphene nanocomposites. Phys Chem Chem Phys 2015; 16:12251-60. [PMID: 24820059 DOI: 10.1039/c4cp01566e] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a significant efficiency enhancement of hybrid bulk heterojunction solar cells by utilizing CdSe quantum dots attached to reduced graphene oxide (rGO) as the electron accepting phase, blended with the PCPDTBT polymer. The quantum dot attachment to rGO was achieved following a self-assembly approach, recently developed, using thiolated reduced graphene oxide (TrGO) to form a TrGO-CdSe nanocomposite. Therefore, we are able to obtain TrGO-CdSe quantum dot/PCPDTBT bulk-heterojunction hybrid solar cells with power conversion efficiencies of up to 4.2%, compared with up to 3% for CdSe quantum dot/PCPDTBT devices. The improvement is mainly due to an increase of the open-circuit voltage from 0.55 V to 0.72 V. We found evidence for a significant change in the heterojunction donor-acceptor blend nanomorphology, observable by a more vertical alignment of the TrGO-quantum dot nanocomposites in the z-direction and a different nanophase separation in the x-y direction compared to the quantum dot only containing device. Moreover, an improved charge extraction and trap state reduction were observed for TrGO containing hybrid solar cells.
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Affiliation(s)
- Michael Eck
- Freiburg Materials Research Center (FMF), University of Freiburg, Stefan-Meier-Straße 21, D-79104 Freiburg, Germany.
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25
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Gong M, Shastry TA, Cui Q, Kohlmeyer RR, Luck KA, Rowberg A, Marks TJ, Durstock MF, Zhao H, Hersam MC, Ren S. Understanding charge transfer in carbon nanotube-fullerene bulk heterojunctions. ACS APPLIED MATERIALS & INTERFACES 2015; 7:7428-7435. [PMID: 25797180 DOI: 10.1021/acsami.5b01536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Semiconducting single-walled carbon nanotube/fullerene bulk heterojunctions exhibit unique optoelectronic properties highly suitable for flexible, efficient, and robust photovoltaics and photodetectors. We investigate charge-transfer dynamics in inverted devices featuring a polyethylenimine-coated ZnO nanowire array infiltrated with these blends and find that trap-assisted recombination dominates transport within the blend and at the active layer/nanowire interface. We find that electrode modifiers suppress this recombination, leading to high performance.
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Affiliation(s)
| | | | | | - Ryan R Kohlmeyer
- ∥National Research Council, Washington, D.C. 20001, United States
- ⊥Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States
| | | | | | | | - Michael F Durstock
- ⊥Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433, United States
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26
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Lu H, Bartynski AN, Greaney MJ, Thompson ME, Brutchey RL. Tandem and triple-junction polymer:nanocrystal hybrid solar cells consisting of identical subcells. ACS APPLIED MATERIALS & INTERFACES 2014; 6:18306-18311. [PMID: 25233268 DOI: 10.1021/am5055405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Tandem and triple-junction polymer:nanocrystal hybrid solar cells with identical subcells based on P3HT:CdSe nanocrystal bulk heterojunctions (BHJs) are reported for the first time showing 2-fold and 3-fold increases of open-circuit voltage (VOC), respectively, relative to the single-junction cell. A combination of nanocrystalline ZnO and pH-neutral PEDOT:PSS is used as the interconnecting layer, and the thicknesses of subcells are optimized with the guidance of optical simulations. As a result, the average power conversion efficiency (PCE) exhibits a significant increase from 2.0% (VOC = 0.57 V) in single-junction devices to 2.7% (champion 3.1%, VOC = 1.28 V) in tandem devices and 2.3% (VOC = 1.98 V) in triple-junction devices.
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Affiliation(s)
- Haipeng Lu
- Department of Chemistry and the Center for Energy Nanoscience, University of Southern California , Los Angeles, California 90089-0744, United States
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27
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Rath AK, Pelayo Garcia de Arquer F, Stavrinadis A, Lasanta T, Bernechea M, Diedenhofen SL, Konstantatos G. Remote trap passivation in colloidal quantum dot bulk nano-heterojunctions and its effect in solution-processed solar cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:4741-7. [PMID: 24895324 DOI: 10.1002/adma.201400297] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 03/28/2014] [Indexed: 05/05/2023]
Abstract
More-efficient charge collection and suppressed trap recombination in colloidal quantum dot (CQD) solar cells is achieved by means of a bulk nano-heterojunction (BNH) structure, in which p-type and n-type materials are blended on the nanometer scale. The improved performance of the BNH devices, compared with that of bilayer devices, is displayed in higher photocurrents and higher open-circuit voltages (resulting from a trap passivation mechanism).
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Affiliation(s)
- Arup K Rath
- ICFO - Institut de Ciéncies Fotóniques, Mediterranean Technology Park, Av. Carl Friedrich Gauss, 3, 08860, Castelldefels, Barcelona, Spain; CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
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28
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29
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Yan J, Saunders BR. Third-generation solar cells: a review and comparison of polymer:fullerene, hybrid polymer and perovskite solar cells. RSC Adv 2014. [DOI: 10.1039/c4ra07064j] [Citation(s) in RCA: 181] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Third-generation solar cells have excellent potential for delivering large scale, low-cost solar electricity. We review and compare the current understanding of the operation principles, performance improvements and future prospects for polymer:fullerene, hybrid polymer and perovskite solar cells.
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Affiliation(s)
- Junfeng Yan
- Polymer Science and Technology Group
- School of Materials
- The University of Manchester
- Manchester, UK
| | - Brian R. Saunders
- Polymer Science and Technology Group
- School of Materials
- The University of Manchester
- Manchester, UK
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