1
|
Duan H, Lin Z, Xu X, Song Q, Dong H, Gao X, Mu C, Ouyang X. Highly Stable Perovskite Solar Cells Based on the Efficient Interaction between Pb 2+ and Cyano Groups of 4-Aminophthalonitrile. Chemistry 2023; 29:e202302703. [PMID: 37857570 DOI: 10.1002/chem.202302703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 10/21/2023]
Abstract
Defects present on the top surface of perovskite films have a pronounced detrimental impact on the photovoltaic performance and stability of perovskite solar cells (PSCs). Consequently, the development of effective defect passivation strategies has become key in enhancing both the power conversion efficiency (PCE) and stability of PSCs. In this study, a small molecule material, 4-Aminophthalonitrile (4-APN), was introduced as a means to mitigate surface defects within perovskite films. Obviously, 4-APN effectively passivates the defects at grain boundaries by combining cyano groups (-C≡N) with Pb2+ , significantly reducing the density of defect states, inhibiting non-radiative recombination at the interface, and promoting the charge transfer efficiency from the perovskite layer to the hole transport layer. The 4-APN modification led to a significant upswing in the PCE, while concurrently bolstering the overall device stability. Importantly, the devices on 4-APN as passivation additive exhibited negligible performance degradation aging for 1200 h.
Collapse
Affiliation(s)
- Hairui Duan
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Zhichao Lin
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
- Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, P. R. China
| | - Xiangning Xu
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Qili Song
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Hongye Dong
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Xiaowen Gao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - Cheng Mu
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Xinhua Ouyang
- Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, P. R. China
| |
Collapse
|
2
|
Guo Y, Zhao D, Yu M, Liu M, Zhang Y, Zheng Z. A simple strategy to obtain graphitic carbon nitride modified TiO 2layer for efficient perovskite solar cells. NANOTECHNOLOGY 2023; 35:075201. [PMID: 37972403 DOI: 10.1088/1361-6528/ad0d21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 11/15/2023] [Indexed: 11/19/2023]
Abstract
The power conversion efficiency (PCE) of perovskite solar cells (PSCs) can be improved through the concurrent strategies of enhancing charge transfer and passivating defects. Graphite carbon nitride (g-C3N4) has been demonstrated as a promising modifier for optimizing energy level alignment and reducing defect density in PSCs. However, its preparation process can be complicated. A simple one-step calcination approach was used in this study to prepare g-C3N4-modified TiO2via the incorporation of urea into the TiO2precursor. This modification simultaneously tunes the energy level alignment and passivates interface defects. The comprehensive research confirms that the addition of moderate amounts of g-C3N4to TiO2results in an ideal alignment of energy levels with perovskite, thereby enhancing the ability to separate and transfer charges. Additionally, the g-C3N4-modified perovskite films exhibit an increase in grain size and crystallinity, which reduces intrinsic defects density and extends charge recombination time. Therefore, the g-C3N4-modified PSC achieves a champion PCE of 20.00%, higher than that of the control PSC (17.15%). Our study provides a systematic comprehension of the interfacial engineering strategy and offers new insights into the development of high-performance PSCs.
Collapse
Affiliation(s)
- Yanru Guo
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, People's Republic of China
| | - Dandan Zhao
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, People's Republic of China
| | - Man Yu
- School of Materials Engineering, Xi'an Aeronautical University, Xi'an 710077, People's Republic of China
| | - Manying Liu
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, People's Republic of China
| | - Yange Zhang
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, People's Republic of China
| | - Zhi Zheng
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang 461000, People's Republic of China
| |
Collapse
|
3
|
Sun Z, Gu N, Feng Y, Song L, Du P, Jiang H, Xiong J. Hydrazone dye passivator for high-performance and stable perovskite solar cells. Dalton Trans 2023; 52:1702-1710. [PMID: 36651567 DOI: 10.1039/d2dt03957e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
There has been rapid development of organic-inorganic perovskite solar cells (PSCs) in recent years, but efficiency and stability challenges remain due to the massive defects in perovskite films. Here, the organic dye Th-azi-Pyr (ethyl 2-(2-(3-methyl-5-oxo-1-phenyl-1,5-dihydro-4H-pyrazol-4-ylidene) hydrazineyl)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate) with carbonyl, pyrazolone structure, and benzene ring was synthesized and used to prepare high-quality perovskite film as an additive. Th-azi-Pyr formed relatively stable intermediate ligands with uncoordinated Pb and I, slowing the crystal growth and reducing the grain boundary defects of perovskite. In addition, the benzene ring in the dye protected against moisture and increased the stability of the perovskite film. Therefore, the Th-azi-Pyr-modified PSC assembled in an air environment exhibited a promising power conversion efficiency (PCE) of 19.27%, which is superior to the 15.33% of the control PSC. Additionally, 88% of the original performance was maintained after 300 h at 25 ± 5 °C and 50 ± 10% relative humidity, implying that the modified PSCs exhibited greater stability than the untreated PSCs. This work indicates that simple and low-cost organic dyes are excellent defect passivators for high-performance PSCs.
Collapse
Affiliation(s)
- Zeyuan Sun
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
| | - Ningxia Gu
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
| | - Ye Feng
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
| | - Lixin Song
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
| | - Pingfan Du
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
| | - Hua Jiang
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
| | - Jie Xiong
- College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
| |
Collapse
|
4
|
Lin Z, Xu X, Dong H, Song Q, Duan H, Mu C. Enhancing the Efficiency of Perovskite Solar Cells by Bidirectional Modification of the Perovskite and Electron Transport Layer. ACS APPLIED MATERIALS & INTERFACES 2023; 15:1097-1104. [PMID: 36583669 DOI: 10.1021/acsami.2c18341] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In perovskite solar cells (PSCs), the numerous defects present on the surface of the SnO2 electron transport layer (ETL) and the bottom of the perovskite film limit their power conversion efficiency (PCE) and stability. In view of this, a bidirectional modification strategy is designed using formamidine acetate (FAAc) to passivate the defects on the SnO2 ETL surface and bottom of the perovskite simultaneously. FA+ cations act on the harmful hydroxyl groups on the SnO2 ETL surface, whereas Ac- anions act on the iodine vacancy defect at the bottom of the perovskite. Because the interface defect is well passivated by FAAc, the interfacial charge recombination is restrained. This results in a significant increase in the filling factor of the PSC to ∼0.83 and the consequent increase in PCE to 23.05%, which considerably improves the stability. Bidirectional modification technology is an effective strategy for improving the PCE and stability of PSCs.
Collapse
Affiliation(s)
- Zhichao Lin
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Xiangning Xu
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Hongye Dong
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Qili Song
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Hairui Duan
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Cheng Mu
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| |
Collapse
|
5
|
Xu X, Lin Z, Cai Q, Dong H, Wang X, Mu C. Defect management by a cesium fluoride-modified electron transport layer promotes perovskite solar cells. Phys Chem Chem Phys 2022; 24:22562-22571. [PMID: 36102344 DOI: 10.1039/d2cp03207d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
SnO2 is a candidate material for electron transport layers (ETLs) in perovskite solar cells (PSCs). However, a large number of defects at the SnO2/perovskite interface lead to notable non-radiative interfacial recombination. Moreover, the energy level arrangement between SnO2/perovskite does not match well. In this study, a SnO2/CsF-SnO2 double-layer ETL was prepared by doping CsF into SnO2, effectively passivating the defects of the SnO2 ETL and SnO2/perovskite interface. The formation of a good energy level arrangement with the perovskite layer reduces the interface non-radiative recombination and improves the performance of the interface charge extraction. The photoelectric conversion efficiency of the optimal CsF-modified PSC reached 22.18%, owing to the significant increase in the open-circuit voltage to 1.180 V.
Collapse
Affiliation(s)
- Xiangning Xu
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China.
| | - Zhichao Lin
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China.
| | - Qingbin Cai
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China.
| | - Hongye Dong
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China.
| | - Xinli Wang
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China.
| | - Cheng Mu
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China.
| |
Collapse
|
6
|
Sun X, Jang H, Sun Y, Guo Z, Pang Z, Wang F, Yang J, Yang L. Multi-functional L-histidine self-assembled monolayers on SnO2 electron transport layer to boost photovoltaic performance of Perovskite solar cells. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
7
|
Cai Q, Lin Z, Zhang W, Xu X, Dong H, Yuan S, Liang C, Mu C. Efficient and Stable Perovskite Solar Cells via CsPF 6 Passivation of Perovskite Film Defects. J Phys Chem Lett 2022; 13:4598-4604. [PMID: 35584450 DOI: 10.1021/acs.jpclett.2c01030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Polycrystalline perovskite films have many fatal defects; defect passivation can improve the performance of perovskite solar cells (PSCs). In this study, the defects in perovskite films are passivated by introducing the pseudohalide salt CsPF6 into the films. Because the ionic radii of Cs+ and PF6- are close to those of FA+ and I-, respectively, they can be uniformly doped into perovskite films to passivate the bulk, surface, and grain boundary defects. The photovoltaic performance of the PSCs significantly improved after passivation. Moreover, the photoelectric conversion efficiency increased significantly from 21.36% to 23.15% after passivation. Because of defect passivation, PSCs also exhibit good environmental stability. This study introduces a scheme for improving the photovoltaic performance of PSCs via passivation.
Collapse
Affiliation(s)
- Qingbin Cai
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Zhichao Lin
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Wenqi Zhang
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Xiangning Xu
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Hongye Dong
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Shuai Yuan
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Chao Liang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Cheng Mu
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| |
Collapse
|
8
|
Feng Z, Wu Z, Hua Y, Weng C, Chen X, Huang S. Azadipyrromethene Dye-Assisted Defect Passivation for Efficient and Stable Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:14388-14399. [PMID: 35296134 DOI: 10.1021/acsami.1c20923] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Organic-inorganic perovskite solar cells (PSCs) provide one of the most outstanding photovoltaic (PV) technologies, yet their efficiency, stability, and defect passivation engineering still remain challenging. We demonstrate the use of low-cost, eco-friendly, and multi-functional aza-dipyrromethene (Aza-DIPY) dye molecules to promote the power conversion efficiency (PCE) and the operating stability of PSC devices. The Aza-DIPY dye was meticulously synthesized and incorporated into PSC devices via a one-step solution processing approach. The pyrrole, benzene ring, and chlorine functional groups on the dye have intense interactions with perovskite to passivate surface defects and obtain high-quality perovskite absorbers, resulting in the lengthened carrier recombination time and enhanced fill factor of PSCs. Additionally, the hydrophobic phenyl and halogen functional groups on the Aza-DIPY perform as a protecting barrier against moisture and ameliorate the stability of PSCs. As a consequence, the PV performance of PSCs is considerably improved, with the average PCE increased from 16.71% to 19.71%, and the champion device with Aza-DIPY shows a PCE of 20.46%. The unencapsulated PSC devices with multi-functional molecular Aza-DIPY maintains 89.06% of their beginning PCEs after storage in ambient air (25-30 °C, 50-70% relative humidity) under dark conditions for 100 h, exhibiting a significantly enhanced ambient stability compared with the case of the reference cells without the dye. Furthermore, the Aza-DIPY-modified PSC devices exhibit strong and reversible photoresponses, with a high responsivity of 0.739 mA/W to near-infrared (NIR) laser beams. Our results highlight the potential of synthesizing multi-functional Aza-DIPY dyes-incorporated PSC devices with sensitive NIR/visible light responses, high PV efficiency, and stability.
Collapse
Affiliation(s)
- Zhiying Feng
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Electronic Science, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Zhixing Wu
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Electronic Science, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Yikun Hua
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Electronic Science, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Chaocang Weng
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Electronic Science, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Xiaohong Chen
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Electronic Science, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Sumei Huang
- Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Electronic Science, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| |
Collapse
|
9
|
Zhang W, Lin Z, Cai Q, Xu X, Dong H, Mu C, Zhang JP. Electron Transport Assisted by Transparent Conductive Oxide Elements in Perovskite Solar Cells. CHEMSUSCHEM 2022; 15:e202102002. [PMID: 34879176 DOI: 10.1002/cssc.202102002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 11/16/2021] [Indexed: 06/13/2023]
Abstract
Fluorine and indium elements in F-doped SnO2 (FTO) and Sn-doped In2 O3 (ITO), respectively, significantly contribute toward enhancing the electrical conductivity of these transparent conductive oxides. In this study, fluorine was combined with indium to modify the SnO2 electron transport layer (ETL) through InF3 . Consequently, the modified perovskite solar cells (PSCs) showe the favorable alignment of energy levels, improved absorption and utilization of light, enhanced interfacial charge extraction, and suppressed interfacial charge recombination. After InF3 modification, the open circuit voltage (Voc ) and fill factor (FF) of the PSC were significantly improved, and the photoelectric conversion efficiency (PCE) reached 21.39 %, far exceeding that of the control PSC (19.62 %).
Collapse
Affiliation(s)
- Wenqi Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Zhichao Lin
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Qingbin Cai
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Xiangning Xu
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Hongye Dong
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Cheng Mu
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| | - Jian-Ping Zhang
- Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China
| |
Collapse
|
10
|
Lin Z, Zhang W, Cai Q, Xu X, Dong H, Mu C, Zhang J. Precursor Engineering of the Electron Transport Layer for Application in High-Performance Perovskite Solar Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2102845. [PMID: 34633769 PMCID: PMC8596138 DOI: 10.1002/advs.202102845] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/02/2021] [Indexed: 06/13/2023]
Abstract
The electron transport layer (ETL) is a key component of regular perovskite solar cells to promote the overall charge extraction efficiency and tune the crystallinity of the perovskite layer for better device performance. The authors present a novel protocol of ETL engineering by incorporating a composition of the perovskite precursor, methylammonium chloride (MACl), or formamidine chloride (FACl), into SnO2 layers, which are then converted into the crystal nuclei of perovskites by reaction with PbI2 . The SnO2 -embedded nuclei remarkably improve the morphology and crystallinity of the optically active perovskite layers. The improved ETL-to-perovskite electrical contact and dense packing of large-grained perovskites enhance the carrier mobility and suppress charge recombination. The power conversion efficiency increases from 20.12% (blank device) to 21.87% (21.72%) for devices with MACl (FACl) as an ETL dopant. Moreover, all the precursor-engineered cells exhibit a record-high fill factor (82%).
Collapse
Affiliation(s)
- Zhichao Lin
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Wenqi Zhang
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Qingbin Cai
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Xiangning Xu
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Hongye Dong
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Cheng Mu
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| | - Jian‐Ping Zhang
- Department of ChemistryRenmin University of ChinaBeijing100872P. R. China
| |
Collapse
|
11
|
Song L, Huang L, Liu Y, Hu Y, Guo X, Chang Y, Geng C, Xu S, Zhang Z, Zhang Y, Luan N. Efficient and Stable Blue Perovskite Light-Emitting Devices Based on Inorganic Cs 4PbBr 6 Spaced Low-Dimensional CsPbBr 3 through Synergistic Control of Amino Alcohols and Polymer Additives. ACS APPLIED MATERIALS & INTERFACES 2021; 13:33199-33208. [PMID: 34233117 DOI: 10.1021/acsami.1c02555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Perovskite light-emitting devices (PeLEDs) have drawn a great deal of attention because of their exceptional optical and electrical properties. However, as for the blue PeLEDs based on low-dimensional (LD) CsPbBr3, the low conductivity of the widely used organic spacers as well as the difficulty of forming pure and uniform LD CsPbBr3 phase have severely inhibited the device performance such as stability and efficiency. In this work, we report an effective strategy to obtain high-quality LD CsPbBr3 by using a novel spacer of inorganic Cs4PbBr6 instead of the common long-chain ammonium halides. We found that a 3-amino-1-propanol (3AP)-modified PEDOT:PSS was helpful to stimulate the formation of the LD blue emissive CsPbBr3:Cs4PbBr6 composite. We also revealed that an additive of poly(vinylpyrrolidone) (PVP) in the precursor can limit further growth of LD perovskite phase into 3D perovskite phase upon annealing, thus resulting in a uniformly distributed LD perovskite with high color stability. Consequently, efficient blue PeLEDs @ 485 nm with a brightness of 2192 cd/m2, current efficiency of 2.68 cd/A, and external quantum efficiency of 2.3% was successfully achieved. More importantly, the device showed much improved working stability compared to those with the spacer of organic ammonium halides. Our results provide some helpful insights into developing efficient and stable blue PeLEDs.
Collapse
Affiliation(s)
- Li Song
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment and Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Lixin Huang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment and Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Yuan Liu
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment and Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Yongsheng Hu
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaoyang Guo
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Yulei Chang
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Chong Geng
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment and Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Shu Xu
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment and Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Zihui Zhang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment and Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Yonghui Zhang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment and Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| | - Nannan Luan
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment and Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, Tianjin 300401, P.R. China
| |
Collapse
|
12
|
Song L, Huang L, Liu Y, Guo X, Geng C, Xu S, Xia Y, Zhang Y, Luan N, Hu Y. Efficient Thermally Evaporated Perovskite Light-Emitting Devices via a Bilateral Interface Engineering Strategy. J Phys Chem Lett 2021; 12:6165-6173. [PMID: 34184904 DOI: 10.1021/acs.jpclett.1c01592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Physical vapor deposition has emerged as a promising strategy for efficient and stable all-inorganic perovskite light-emitting devices (PeLEDs). However, the thermally evaporated PeLEDs still suffer from unsatisfactory optoelectrical performance because of the massive nonradiative defects. Herein, we demonstrate an efficient bilateral interfacial defect-passivation strategy toward high-performance PeLEDs with a thermally deposited CsPbBr3 emissive layer (EML). Specifically, the nonradiative defects from the bulk as well as the EML/charge transport layer (CTL) interface are significantly suppressed by implementing the 3-amino-1-propanol (3AP)-modified PEDOT:PSS and introducing ammonium salts, respectively. Simultaneously, both the 3AP induced less-conductive Cs4PbBr6 and ammonium salts can balance the charge injection into the EML effectively. As a result, we achieved efficient PeLEDs based on thermally evaporated CsPbBr3 with a luminance of 15745 cd/m2, current efficiency of 32 cd/A, external quantum efficiency of 8.86%, and lifetime of 3.74 h. The strategy proposed here may shed light on the development of highly efficient thermally evaporated PeLEDs.
Collapse
Affiliation(s)
- Li Song
- Tianjin Key Laboratory of Electronic Materials and Devices, Hebei Key Laboratory of Advanced Laser Technology and Equipment, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, P.R. China
| | - Lixin Huang
- Tianjin Key Laboratory of Electronic Materials and Devices, Hebei Key Laboratory of Advanced Laser Technology and Equipment, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, P.R. China
| | - Yuan Liu
- Tianjin Key Laboratory of Electronic Materials and Devices, Hebei Key Laboratory of Advanced Laser Technology and Equipment, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, P.R. China
| | - Xiaoyang Guo
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Chong Geng
- Tianjin Key Laboratory of Electronic Materials and Devices, Hebei Key Laboratory of Advanced Laser Technology and Equipment, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, P.R. China
| | - Shu Xu
- Tianjin Key Laboratory of Electronic Materials and Devices, Hebei Key Laboratory of Advanced Laser Technology and Equipment, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, P.R. China
| | - Yuanqin Xia
- Tianjin Key Laboratory of Electronic Materials and Devices, Hebei Key Laboratory of Advanced Laser Technology and Equipment, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, P.R. China
| | - Yuan Zhang
- Tianjin Key Laboratory of Electronic Materials and Devices, Hebei Key Laboratory of Advanced Laser Technology and Equipment, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, P.R. China
| | - Nannan Luan
- Tianjin Key Laboratory of Electronic Materials and Devices, Hebei Key Laboratory of Advanced Laser Technology and Equipment, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, P.R. China
| | - Yongsheng Hu
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
| |
Collapse
|
13
|
Guo Y, Yuan S, Zhu D, Yu M, Wang HY, Lin J, Wang Y, Qin Y, Zhang JP, Ai XC. Influence of the MACl additive on grain boundaries, trap-state properties, and charge dynamics in perovskite solar cells. Phys Chem Chem Phys 2021; 23:6162-6170. [PMID: 33687033 DOI: 10.1039/d0cp06575g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Grain boundary trap passivation in perovskite films has become one of the most effective strategies for suppressing the charge recombination and enhancing the photovoltaic performance of perovskite solar cells, whereas the relevant trap-state properties and the charge carrier dynamics need to be further clarified. In this work, the CH3NH3Cl (MACl) additive is introduced into the MAI:PbI2 precursor solution to obtain perovskite films comprising various grain sizes with distinct grain boundaries and trap-state properties. The influence of grain boundary traps passivated with the MACl additive on trap-state properties and charge carrier transport/recombination dynamics is systematically studied with time-resolved spectroscopic and transient photoelectric characterization. Specifically, the MACl amount determines the content of the PbI2 residual in the final perovskite, leading to photoluminescence quenching induced by charge transfer. The trap-state distribution result reveals that the deep-level traps at the grain boundaries as the main sources of charge recombination centers are dramatically passivated. Low-temperature photoluminescence spectroscopy distinguishes and compares the trap-state emission related to different perovskite phases. Transient photoelectric measurements including photovoltage decay and charge extraction further demonstrate that the boundary trap passivation can effectively promote charge transport and inhibit charge recombination in devices treated with the optimized MACl amount. As a result, the corresponding device possesses superior photovoltaic parameters to the control device. This work proposes a systematic understanding of the grain boundary trap passivation strategy and provides a new insight into the development of high-performance perovskite solar cells.
Collapse
Affiliation(s)
- Yanru Guo
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Shuai Yuan
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Dongping Zhu
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Man Yu
- School of Materials Engineering, Xi'an Aeronautical University, Xi'an 710077, China
| | - Hao-Yi Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Jun Lin
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Yi Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Yujun Qin
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Jian-Ping Zhang
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| | - Xi-Cheng Ai
- Department of Chemistry, Renmin University of China, Beijing 100872, China.
| |
Collapse
|
14
|
Li Z, Wang P, Ma C, Igbari F, Kang Y, Wang KL, Song W, Dong C, Li Y, Yao J, Meng D, Wang ZK, Yang Y. Single-Layered MXene Nanosheets Doping TiO 2 for Efficient and Stable Double Perovskite Solar Cells. J Am Chem Soc 2021; 143:2593-2600. [PMID: 33535753 DOI: 10.1021/jacs.0c12739] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The inorganic lead-free Cs2AgBiBr6 double perovskite structure is the promising development direction in perovskite solar cells (PSCs) to solve the problem of the instability of the APbX3 structure and lead toxicity. However, the low short-circuit current and power conversion efficiency (PCE) caused by the low crystallization of Cs2AgBiBr6 greatly limit the optoelectronic application. Herein, we adopt a simple strategy to dope single-layered MXene nanosheets into titania (Ti3C2Tx@TiO2) as a multifunctional electron transport layer for stable and efficient Cs2AgBiBr6 double PSCs. The single-layered MXene nanosheets significantly improve the electrical conductivity and electron extraction rate of TiO2; meanwhile, the single-layered MXene nanosheets change the surface wettability of the electron transport layer and promote the crystallization of the Cs2AgBiBr6 double perovskite in solar cell devices. Therefore, the PCE went up by more than 40% to 2.81% compared to that of a TiO2 based device, and the hysteresis was greatly suppressed. Furthermore, the device based on Ti3C2Tx@TiO2 showed the long-term operating stability. After storing the device for 15 days under ambient air conditions, the PCE still remained a retention rate of 93% of the initial one. Our finding demonstrates the potential of Ti3C2Tx@TiO2 in electron transfer material of high-performance double PSCs.
Collapse
Affiliation(s)
- Zhenxing Li
- State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, China University of Petroleum (Beijing), Beijing 102249, China
| | - Ping Wang
- State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, China University of Petroleum (Beijing), Beijing 102249, China
| | - Chang Ma
- State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, China University of Petroleum (Beijing), Beijing 102249, China.,BTR New Energy Materials Inc., Bao'an District, Shenzhen 518106, China
| | - Femi Igbari
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, China
| | - Yikun Kang
- State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, China University of Petroleum (Beijing), Beijing 102249, China
| | - Kai-Li Wang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, China
| | - Weiyu Song
- State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, China University of Petroleum (Beijing), Beijing 102249, China
| | - Chong Dong
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, China
| | - Yanjie Li
- State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, China University of Petroleum (Beijing), Beijing 102249, China
| | - Jiasai Yao
- State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials, China University of Petroleum (Beijing), Beijing 102249, China
| | - Dong Meng
- Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States
| | - Zhao-Kui Wang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, China
| | - Yang Yang
- Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States
| |
Collapse
|