1
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Wang S, Zhao Y, Ma J, Bai C, Zhang H, Ren Y. Phosphomolybdic acid-modified polyaniline nanowires with abundant acidic sites for efficient photocatalytic reduction of nitrate to nitrogen in water. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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2
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Hu B, Yang Y, Wang J, Wang W, Li J, Liu S, Xia D, Lin K, Dong Y, Fan R. Investigation on the Mechanism of Radical Intermediate Formation and Moderate Oxidation of Spiro-OMeTAD by the Synergistic Effect of Multisubstituted Polyoxometalates in Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:17610-17620. [PMID: 35380420 DOI: 10.1021/acsami.1c24337] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Conventional oxidation of 2,2',7,7'-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene (Spiro-OMeTAD) by air would bring various drawbacks for perovskite solar cells (PSCs), such as low power conversion efficiency (PCE) and poor stability. Here, a series of heteroatom-substituted Keggin-type polyoxometalates (POMs), H4PMo11VO40 (PMo11V), H5PMo10V2O40 (PMo10V2), and H6PMo9V3O40 (PMo9V3) are prepared and applied as p-type dopants to realize quantitative and controllable oxidation of Spiro-OMeTAD under an inert condition. The possible mechanism and electron donor regions in the oxidation of Spiro-OMeTAD are investigated using two-dimensional nuclear magnetic resonance (NMR) spectra and the relationship between POM structures and the oxidation degree of Spiro-OMeTAD is proposed. In addition, the synergistic effect of heteroatoms makes V2-substituted PMo10V2 exhibit appropriate oxidation of Spiro-OMeTAD and promoted the highest efficient hole extraction as well as the decreased charge recombination. Therefore, the champion device doped with PMo10V2 shows a PCE of 20.41% and a superior open circuit voltage (Voc) of 1.133 V, surpassing that of the pristine device (18.61%). This work presents a fresh perspective to the controllable oxidation of Spiro-OMeTAD employing economical inorganic POM dopants, which would promote the commercialization of PSCs.
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Affiliation(s)
- Boyuan Hu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Yulin Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Jiaqi Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Wei Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Jiao Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Shihui Liu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Debin Xia
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Kaifeng Lin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Yayu Dong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Ruiqing Fan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
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3
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Pardiwala A, Kumar S, Jangir R. Insights into organic-inorganic hybrid molecular materials: organoimido functionalized polyoxomolybdates. Dalton Trans 2022; 51:4945-4975. [PMID: 35246674 DOI: 10.1039/d1dt04376e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Polyoxometalates (POMs) are polyatomic anions that comprise transition metal group 5 (V, Nb, Ta) or group 6 (Mo, W) oxyanions connected together by shared oxygen atoms. POMs are fascinating because of their exclusive and remarkable characteristics. One of the most interesting features of POMs is their capability to function as an electron relay by performing stepwise multi-electron redox reactions while maintaining their structural integrity. Functionalization of POMs with amino organic compounds results in organoimido derivatives of polyoxometalates, which have aroused interest due to augmentation of their properties. Comprehensive study has shown that the synthesis methodologies to obtain desired organoimido derivatives of POMs by employing various imido-releasing reagents have progressed drastically in recent decades, particularly the innovative DCC-dehydrating technique. These organoimido functionalized POMs have been used as major building blocks to develop unique nanostructured organic-inorganic hybrid molecular materials. Many conventional organic synthesis processes such as Pd-catalyzed carbon-carbon coupling and esterification reactions have been performed with organoimido functionalized POMs where the presence of POM triggered the reaction process. Thus, investigation of the reactivity of organoimido derivatives of POMs foreshadows the intriguing future of POMs chemistry.
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Affiliation(s)
- Ankita Pardiwala
- Sardar Vallabhbhai National Institute of Technology, Ichchanath, Surat-395 007, Gujarat, India.
| | - Shubham Kumar
- Sardar Vallabhbhai National Institute of Technology, Ichchanath, Surat-395 007, Gujarat, India.
| | - Ritambhara Jangir
- Sardar Vallabhbhai National Institute of Technology, Ichchanath, Surat-395 007, Gujarat, India.
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Yuan S, Xu X, Daaoub A, Fang C, Cao W, Chen H, Sangtarash S, Zhang J, Sadeghi H, Hong W. Single-atom control of electrical conductance and thermopower through single-cluster junctions. NANOSCALE 2021; 13:12594-12601. [PMID: 34259698 DOI: 10.1039/d1nr02734d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The control of single atoms offers fundamental insight into understanding the charge transport through single clusters, and the atomic precision of the clusters provides the opportunity to manipulate the charge transport even at the single-atom level. Herein, we designed and investigated the electrical conductance and thermopower of Anderson-type polyoxometalate (POM) clusters with single-atom variation using the scanning tunneling microscopy break-junction (STM-BJ) technique. Our results show the electrical conductance of single clusters can be changed by an order of magnitude by substituting different center-metal atoms, and the electrical conductance of clusters shows different bias-dependence. Furthermore, the Seebeck coefficients of the POM clusters also can be significantly changed by the center-metal atoms. The non-equilibrium quantum transport calculations reveal that the electrostatic potential profile is non-uniformly dependent on the center-metal atoms. This leads to gating of electrical conductance by bias voltage. This supports the tuning of thermopower and bias dependent transmission spectra. This work provides the fundamental understanding of single-atom control of charge transport in POM single-cluster junctions.
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Affiliation(s)
- Saisai Yuan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University Xiamen, 361005, China.
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Wang J, Zhang J, Yang Y, Gai S, Dong Y, Qiu L, Xia D, Fan X, Wang W, Hu B, Cao W, Fan R. New Insight into the Lewis Basic Sites in Metal-Organic Framework-Doped Hole Transport Materials for Efficient and Stable Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2021; 13:5235-5244. [PMID: 33470803 DOI: 10.1021/acsami.0c19968] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Currently, Spiro-OMeTAD is the most widely used hole transport material (HTM) in the best-performing perovskite solar cells (PSCs), resulting from its suitable energy level and facile processing. However, the intrinsic properties of organic molecules, such as low conductivity and a nonpolar contact interface, will limit the power conversion efficiency (PCE) and stability of Spiro-OMeTAD-based PSCs. Chemical doping could be an effective strategy to ameliorate the performance of Spiro-OMeTAD, and most of the dopants are designed for controllably oxidizing Spiro-OMeTAD. In this work, a highly stable metal-organic framework {[Zn(Hcbob)]·(solvent)}n (Zn-CBOB) with rod topology and Lewis basic sites is assembled and employed as a dopant for the hole transport layer. It is found that Zn-CBOB not only controllably oxidizes Spiro-OMeTAD and improves the conductivity of the HTM but also passivates the surface traps of the perovskite film by coordinating with Pb2+. The Zn-CBOB-doped PSCs achieved a remarkable PCE of 20.64%. In addition, the hydrophobicity of Zn-CBOB can prevent water from destroying the perovskite layer, which helps elevate the stability of PSCs.
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Affiliation(s)
- Jiaqi Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Jian Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Yulin Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Shuang Gai
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Yayu Dong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Lele Qiu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Debin Xia
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Xiao Fan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Wei Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Boyuan Hu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Wei Cao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Ruiqing Fan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
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Fan X, Zhang J, Yang Y, Xia D, Dong Y, Qiu L, Wang J, Cao W, Hu B, Wang W, Fan R. Chemical doping engineering by utilizing trilacunary Keggin polyoxometalates as a dopant for high performance perovskite solar cells. Dalton Trans 2021; 50:279-286. [DOI: 10.1039/d0dt03201h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Trilacunary Keggin type BiW9-Zn was first used as a cost-effective dopant for Spiro-OMeTAD and the PCE was enhanced to 19.56%.
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7
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Chen Y, Wang Y, Wu D, Wu W, Wu Y, Li S, Qin C, Lin H, Shen H, Shi C. Fluorene-terminated hole transporting materials with a spiro[fluorene-9,9′-xanthene] core for perovskite solar cells. NEW J CHEM 2021. [DOI: 10.1039/d0nj06262f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
SFX-FM with four FPA groups (two meta-substituted FPA groups of the xanthene unit) exhibited a maximum PCE of 17.29%.
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Affiliation(s)
- Yan Chen
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Yanqing Wang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Di Wu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Wenfei Wu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Yu Wu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Sicheng Li
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Chunlan Qin
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Hongyu Lin
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Huachen Shen
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- P. R. China
| | - Chengwu Shi
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Hefei 230009
- P. R. China
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Vasilopoulou M, Fakharuddin A, Coutsolelos AG, Falaras P, Argitis P, Yusoff ARBM, Nazeeruddin MK. Molecular materials as interfacial layers and additives in perovskite solar cells. Chem Soc Rev 2020; 49:4496-4526. [DOI: 10.1039/c9cs00733d] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we review the recent strategies for developing organic and inorganic molecular materials for application as electron and hole transport layers and as additives to achieve high efficiency and stability perovskite solar cells.
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Affiliation(s)
- Maria Vasilopoulou
- Institute of Nanoscience and Nanotechnology
- National Center for Scientific Research “Demokritos”
- 15341 Agia Paraskevi
- Greece
| | | | - Athanassios G. Coutsolelos
- Department of Chemistry
- University of Crete
- Laboratory of Bioinorganic Chemistry
- Voutes Campus
- Heraklion 70013
| | - Polycarpos Falaras
- Institute of Nanoscience and Nanotechnology
- National Center for Scientific Research “Demokritos”
- 15341 Agia Paraskevi
- Greece
| | - Panagiotis Argitis
- Institute of Nanoscience and Nanotechnology
- National Center for Scientific Research “Demokritos”
- 15341 Agia Paraskevi
- Greece
| | | | - Mohammad Khaja Nazeeruddin
- Institute of Chemical Sciences and Engineering
- École Polytechnique Fédérale de Lausanne (EPFL)
- Rue de l’Industrie 17
- CH-1951 Sion
- Switzerland
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Kwon H, Lim JW, Han J, Quan LN, Kim D, Shin ES, Kim E, Kim DW, Noh YY, Chung I, Kim DH. Towards efficient and stable perovskite solar cells employing non-hygroscopic F4-TCNQ doped TFB as the hole-transporting material. NANOSCALE 2019; 11:19586-19594. [PMID: 31633140 DOI: 10.1039/c9nr05719f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Designing an efficient and stable hole transport layer (HTL) material is one of the essential ways to improve the performance of organic-inorganic perovskite solar cells (PSCs). Herein, for the first time, an efficient model of a hole transport material (HTM) is demonstrated by optimized doping of a conjugated polymer TFB (poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(4,4'-(N-(4-sec-butylphenyl)diphenylamine)]) with a non-hygroscopic p-type dopant F4-TCNQ (2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane) for high-efficiency PSCs. The PSC with the F4-TCNQ doped TFB exhibits the best power conversion efficiency (PCE) of 17.46%, which surpasses that of the reference devices, i.e., 16.64 (LiTFSI + TBP-doped Spiro-OMeTAD as the HTM) and 11.01% (LiTFSI + TBP-doped TFB as the HTM). F4-TCNQ doped TFB was believed to favor efficient charge and energy transfer between the perovskite and the hole transport layer and to reduce charge recombination as evidenced by steady-state photoluminescence (PL) and time-resolved photoluminescence (TRPL) analysis. Moreover, the hydrophobic nature of F4-TCNQ contributed to enhancing the stability of the device under ambient conditions with a RH of 45%. The device reported herein retained ca. 80% of its initial efficiency after 10 days, significantly superior to both LiTFSI + TBP-doped Spiro-OMeTAD (ca. 30%) and LiTFSI + TBP-doped TFB (ca. 10%) based counterparts. This simple yet novel strategy paves the way for demonstrating a promising route for a wide range of highly efficient solar cells and other photovoltaic applications.
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Affiliation(s)
- Hannah Kwon
- Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea.
| | - Ju Won Lim
- Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea. and Department of Materials Science and Engineering, University of Michigan, Ann Arbor, 48109, USA
| | - Jinyoung Han
- Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea.
| | - Li Na Quan
- Department of Chemistry, University of California, Berkeley, California 94720, USA
| | - Dawoon Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Eun-Sol Shin
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Eunah Kim
- Department of Physics, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Dong-Wook Kim
- Department of Physics, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
| | - Yong-Young Noh
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - In Chung
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Dong Ha Kim
- Department of Chemistry and Nano Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea. and Division of Chemical Engineering and Materials Science, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea
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10
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Dong Y, Zhang J, Yang Y, Qiu L, Xia D, Lin K, Wang J, Fan X, Fan R. Self‐Assembly of Hybrid Oxidant POM@Cu‐BTC for Enhanced Efficiency and Long‐Term Stability of Perovskite Solar Cells. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yayu Dong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 P. R. China
| | - Jian Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 P. R. China
| | - Yulin Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 P. R. China
| | - Lele Qiu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 P. R. China
| | - Debin Xia
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 P. R. China
| | - Kaifeng Lin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 P. R. China
| | - Jiaqi Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 P. R. China
| | - Xiao Fan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 P. R. China
| | - Ruiqing Fan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150001 P. R. China
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Dong Y, Zhang J, Yang Y, Qiu L, Xia D, Lin K, Wang J, Fan X, Fan R. Self-Assembly of Hybrid Oxidant POM@Cu-BTC for Enhanced Efficiency and Long-Term Stability of Perovskite Solar Cells. Angew Chem Int Ed Engl 2019; 58:17610-17615. [PMID: 31591794 DOI: 10.1002/anie.201909291] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Indexed: 11/07/2022]
Abstract
The controllable oxidation of spiro-OMeTAD and improving the stability of hole-transport materials (HTMs) layer are crucial for good performance and stability of perovskite solar cells (PSCs). Herein, we report an efficient hybrid polyoxometalate@metal-organic framework (POM@MOF) material, [Cu2 (BTC)4/3 (H2 O)2 ]6 [H3 PMo12 O40 ]2 or POM@Cu-BTC, for the oxidation of spiro-OMeTAD with Li-TFSI and TBP. When POM@Cu-BTC is introduced to the HTM layer as a dopant, the PSCs achieve a superior fill factor of 0.80 and enhanced power conversion efficiency 21.44 %, as well as improved long-term stability in an ambient atmosphere without encapsulation. The enhanced performance is attributed to the oxidation activity of POM anions and solid-state nanoparticles. Therefore, this research presents a facile way by using hybrid porous materials to accelerate oxidation of spiro-OMeTAD, further improving the efficiency and stability of PSCs.
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Affiliation(s)
- Yayu Dong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Jian Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Yulin Yang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Lele Qiu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Debin Xia
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Kaifeng Lin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Jiaqi Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Xiao Fan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Ruiqing Fan
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
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12
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Schloemer TH, Christians JA, Luther JM, Sellinger A. Doping strategies for small molecule organic hole-transport materials: impacts on perovskite solar cell performance and stability. Chem Sci 2019; 10:1904-1935. [PMID: 30881622 PMCID: PMC6390699 DOI: 10.1039/c8sc05284k] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 01/15/2019] [Indexed: 12/23/2022] Open
Abstract
Hybrid organic/inorganic perovskite solar cells (PSCs) have dramatically changed the landscape of the solar research community over the past decade, but >25 year stability is likely required if they are to make the same impact in commercial photovoltaics and power generation more broadly. While every layer of a PSC has been shown to impact its durability in power output, the hole-transport layer (HTL) is critical for several reasons: (1) it is in direct contact with the perovskite layer, (2) it often contains mobile ions, like Li+ - which in this case are hygroscopic, and (3) it usually has the lowest thermal stability of all layers in the stack. Therefore, HTL engineering is one method with a high return on investment for PSC stability and lifetime. Research has progressed in understanding design rules for small organic molecule hole-transport materials, yet, when implemented into devices, the same dopants, bis(trifluoromethane)sulfonimide lithium salt (LiTFSI) and tris(2-(1H-pyrazol-1-yl)-4-tert-butylpyridine)cobalt(iii) tri[bis(trifluoromethane)sulfonimide] (FK209), are nearly always required for improved charge-transport properties (e.g., increased hole mobility and conductivity). The dopants are notable because they too have been shown to negatively impact PSC stability and lifetime. In response, new research has targeted alternative dopants to bypass these negative effects and provide greater functionality. In this review, we focus on dopant fundamentals, alternative doping strategies for organic small molecule HTL in PSC, and imminent research needs with regard to dopant development for the realization of reliable, long-lasting electricity generation via PSCs.
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Affiliation(s)
- Tracy H Schloemer
- Department of Chemistry , Colorado School of Mines , Golden , CO , USA .
| | - Jeffrey A Christians
- National Renewable Energy Laboratory , Chemistry and Nanoscience Center , Golden , CO , USA
- Hope College , Holland , MI , USA
| | - Joseph M Luther
- National Renewable Energy Laboratory , Chemistry and Nanoscience Center , Golden , CO , USA
| | - Alan Sellinger
- Department of Chemistry , Colorado School of Mines , Golden , CO , USA .
- Materials Science Program , Colorado School of Mines , Golden , CO , USA
- National Renewable Energy Laboratory , Chemistry and Nanoscience Center , Golden , CO , USA
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Wang S, Huang Z, Wang X, Li Y, Günther M, Valenzuela S, Parikh P, Cabreros A, Xiong W, Meng YS. Unveiling the Role of tBP–LiTFSI Complexes in Perovskite Solar Cells. J Am Chem Soc 2018; 140:16720-16730. [DOI: 10.1021/jacs.8b09809] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | | | | | | | - Marcella Günther
- Department of Chemistry and Pharmacy, University of Würzburg, Am Hubland,
Campus Süd, Würzburg 97074, Germany
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Sardashti MK, Zendehdel M, Nia NY, Karimian D, Sheikhi M. High Efficiency MAPbI 3 Perovskite Solar Cell Using a Pure Thin Film of Polyoxometalate as Scaffold Layer. CHEMSUSCHEM 2017; 10:3773-3779. [PMID: 28688154 DOI: 10.1002/cssc.201701027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 07/05/2017] [Indexed: 06/07/2023]
Abstract
Here, we successfully used a pure layer of [SiW11 O39 ]8- polyoxomethalate (POM) structure as a thin-film scaffold layer for CH3 NH3 PbI3 -based perovskite solar cells (PSCs). A smooth nanoporous surface of POM causes outstanding improvement of the photocurrent density, external quantum efficiency (EQE), and overall efficiency of the PSCs compared to mesoporous TiO2 (mp-TiO2 ) as scaffold layer. Average power conversion efficiency (PCE) values of 15.5 % with the champion device showing 16.3 % could be achieved by using POM and a sequential deposition method with the perovskite layer. Furthermore, modified and defect-free POM/perovskite interface led to elimination of the anomalous hysteresis in the current-voltage curves. The open-circuit voltage decay study shows promising decrease of the electron recombination in the POM-based PSCs, which is also related to the modification of the POM/ perovskite interface and higher electron transport inside the POM layer.
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Affiliation(s)
- Mohammad Khaledi Sardashti
- Department of Chemistry, Faculty of Sciences, Sharekord Branch, Islamic Azad University, Shahrekord, 88137-33395, Iran
| | - Mahmoud Zendehdel
- K.S.R.I., Kimia Solar Research Institute), Kimia Solar Company, Isfahan, 87137-45868, Iran
| | - Narges Yaghoobi Nia
- Centre for Hybrid and Organic Solar Energy, CHOSE), University of Rome Tor Vergata, via del Politecnico 1, Rome, 00133, Italy
| | - Davud Karimian
- K.S.R.I., Kimia Solar Research Institute), Kimia Solar Company, Isfahan, 87137-45868, Iran
| | - Mohammad Sheikhi
- S.E.M.C.O., Iranian Strategic Energy and Carbon Management Company), Tehran, 14747-84549, Iran
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