Multifunctional anchoring of O‐ligands for high‐performance and stable inverted perovskite solar cells
Abstract Functional additives have recently been regarded as emerging candidates to improve the performance and stability of perovskite solar cells (PSCs). Herein, nicotinamide (N), 2‐chloronicotinamide (2Cl), and 6‐chloronicotinamide (6Cl) were employed as O‐ligands to facilitate the deposition of...
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| Format: | Article |
| Language: | English |
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Wiley
2023-02-01
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| Series: | InfoMat |
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| Online Access: | https://doi.org/10.1002/inf2.12379 |
| _version_ | 1797900904556396544 |
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| author | Lisha Xie Xuhong Zhao Jianwei Wang Jun Li Chang Liu Shurong Wang Qinye Bao Mengjin Yang Xiaobin Niu Feng Hao Ziyi Ge |
| author_facet | Lisha Xie Xuhong Zhao Jianwei Wang Jun Li Chang Liu Shurong Wang Qinye Bao Mengjin Yang Xiaobin Niu Feng Hao Ziyi Ge |
| author_sort | Lisha Xie |
| collection | DOAJ |
| description | Abstract Functional additives have recently been regarded as emerging candidates to improve the performance and stability of perovskite solar cells (PSCs). Herein, nicotinamide (N), 2‐chloronicotinamide (2Cl), and 6‐chloronicotinamide (6Cl) were employed as O‐ligands to facilitate the deposition of MAPbI3 (MA = methylammonium) and MA‐free FA0.88Cs0.12PbI2.64Br0.36 (FA = formamidinium) perovskite films by multifunctional anchoring. By density functional theory (DFT) calculations and ultraviolet photoelectron spectroscopy (UPS) measurements, it is identified that the highest occupied molecular orbital (HOMO) level for additive modified MAPbI3 perovskite could reduce the voltage deficit for hole extraction. Moreover, due to the most favorable charge distribution and significant improvements in charge mobility and defect passivation, the power conversion efficiency (PCE) of 2Cl‐MAPbI3 PSCs was significantly improved from 19.32% to 21.12%. More importantly, the two‐dimensional grazing‐incidence wide‐angle X‐ray scattering (GIWAXS) analysis showed that PbI2 defects were effectively suppressed and femtosecond transient absorption (TA) spectroscopy demonstrated that the trap‐assisted recombination at grain boundaries was effectively inhibited in the 2Cl‐MA‐free film. As a result, the thermally stable 2Cl‐MA‐free PSCs achieved a remarkable PCE of 23.13% with an open‐circuit voltage (Voc) of 1.164 V and an ultrahigh fill factor (FF) of 85.7%. Our work offers a practical strategy for further commercializing stable and efficient PSCs. |
| first_indexed | 2024-04-10T08:53:25Z |
| format | Article |
| id | doaj.art-56a6e1e0ff20499990c5562b269369a5 |
| institution | Directory Open Access Journal |
| issn | 2567-3165 |
| language | English |
| last_indexed | 2024-04-10T08:53:25Z |
| publishDate | 2023-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | InfoMat |
| spelling | doaj.art-56a6e1e0ff20499990c5562b269369a52023-02-21T22:02:06ZengWileyInfoMat2567-31652023-02-0152n/an/a10.1002/inf2.12379Multifunctional anchoring of O‐ligands for high‐performance and stable inverted perovskite solar cellsLisha Xie0Xuhong Zhao1Jianwei Wang2Jun Li3Chang Liu4Shurong Wang5Qinye Bao6Mengjin Yang7Xiaobin Niu8Feng Hao9Ziyi Ge10Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo People's Republic of ChinaSchool of Materials and Energy University of Electronic Science and Technology of China Chengdu People's Republic of ChinaSchool of Materials and Energy University of Electronic Science and Technology of China Chengdu People's Republic of ChinaNingbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo People's Republic of ChinaNingbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo People's Republic of ChinaSchool of Materials and Energy University of Electronic Science and Technology of China Chengdu People's Republic of ChinaSchool of Physics and Electronic Science East China Normal University Shanghai People's Republic of ChinaNingbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo People's Republic of ChinaSchool of Materials and Energy University of Electronic Science and Technology of China Chengdu People's Republic of ChinaSchool of Materials and Energy University of Electronic Science and Technology of China Chengdu People's Republic of ChinaNingbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo People's Republic of ChinaAbstract Functional additives have recently been regarded as emerging candidates to improve the performance and stability of perovskite solar cells (PSCs). Herein, nicotinamide (N), 2‐chloronicotinamide (2Cl), and 6‐chloronicotinamide (6Cl) were employed as O‐ligands to facilitate the deposition of MAPbI3 (MA = methylammonium) and MA‐free FA0.88Cs0.12PbI2.64Br0.36 (FA = formamidinium) perovskite films by multifunctional anchoring. By density functional theory (DFT) calculations and ultraviolet photoelectron spectroscopy (UPS) measurements, it is identified that the highest occupied molecular orbital (HOMO) level for additive modified MAPbI3 perovskite could reduce the voltage deficit for hole extraction. Moreover, due to the most favorable charge distribution and significant improvements in charge mobility and defect passivation, the power conversion efficiency (PCE) of 2Cl‐MAPbI3 PSCs was significantly improved from 19.32% to 21.12%. More importantly, the two‐dimensional grazing‐incidence wide‐angle X‐ray scattering (GIWAXS) analysis showed that PbI2 defects were effectively suppressed and femtosecond transient absorption (TA) spectroscopy demonstrated that the trap‐assisted recombination at grain boundaries was effectively inhibited in the 2Cl‐MA‐free film. As a result, the thermally stable 2Cl‐MA‐free PSCs achieved a remarkable PCE of 23.13% with an open‐circuit voltage (Voc) of 1.164 V and an ultrahigh fill factor (FF) of 85.7%. Our work offers a practical strategy for further commercializing stable and efficient PSCs.https://doi.org/10.1002/inf2.12379additive engineeringcarrier non‐radiative recombinationdefects passivationformamidine‐cesiuminverted perovskite solar cells |
| spellingShingle | Lisha Xie Xuhong Zhao Jianwei Wang Jun Li Chang Liu Shurong Wang Qinye Bao Mengjin Yang Xiaobin Niu Feng Hao Ziyi Ge Multifunctional anchoring of O‐ligands for high‐performance and stable inverted perovskite solar cells InfoMat additive engineering carrier non‐radiative recombination defects passivation formamidine‐cesium inverted perovskite solar cells |
| title | Multifunctional anchoring of O‐ligands for high‐performance and stable inverted perovskite solar cells |
| title_full | Multifunctional anchoring of O‐ligands for high‐performance and stable inverted perovskite solar cells |
| title_fullStr | Multifunctional anchoring of O‐ligands for high‐performance and stable inverted perovskite solar cells |
| title_full_unstemmed | Multifunctional anchoring of O‐ligands for high‐performance and stable inverted perovskite solar cells |
| title_short | Multifunctional anchoring of O‐ligands for high‐performance and stable inverted perovskite solar cells |
| title_sort | multifunctional anchoring of o ligands for high performance and stable inverted perovskite solar cells |
| topic | additive engineering carrier non‐radiative recombination defects passivation formamidine‐cesium inverted perovskite solar cells |
| url | https://doi.org/10.1002/inf2.12379 |
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