|
1
|
Liu L, Bi H, Chen Y, Chen X, Su P, Li G, Zou H, Yi Z. Simultaneous Passivation of Perovskite Interfaces at Multiple Active Sites Improves Device Performance: Combining Theory and Experiment. J Phys Chem Lett 2024; 15:766-772. [PMID: 38227448 DOI: 10.1021/acs.jpclett.3c03352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
A multisite interface passivation material named 2-mercapto-4-methyl-5-thiazoleacetic acid (MMTA) is used to optimize the perovskite film top interface. DFT calculations and experiments show that MMTA can effectively passivate interface defects. Finally, the champion device's photoelectric conversion efficiency reached 23.44%, which possessed long-term stability.
Collapse
Affiliation(s)
- Li Liu
- Joint Laboratory for Extreme Conditions Matter Properties, School of Mathematics and Physics, Southwest University of Science and Technology, Mianyang, People's Republic of China, 621010
| | - Huan Bi
- Graduate School of Informatics and Engineering, The University of Electro-Communications, Tokyo, Japan, 182-8585
| | - Yongheng Chen
- Joint Laboratory for Extreme Conditions Matter Properties, School of Mathematics and Physics, Southwest University of Science and Technology, Mianyang, People's Republic of China, 621010
| | - Xifang Chen
- Joint Laboratory for Extreme Conditions Matter Properties, School of Mathematics and Physics, Southwest University of Science and Technology, Mianyang, People's Republic of China, 621010
| | - Pengyu Su
- School of Electronic Information Engineering, Yangtze Normal University, Chongqing, People's Republic of China, 408100
| | - Gongfa Li
- Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan, People's Republic of China, 430081
| | - Hanjun Zou
- Analytical and Testing Center, Chongqing University, Chongqing, P. R. China. 401331
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, School of Mathematics and Physics, Southwest University of Science and Technology, Mianyang, People's Republic of China, 621010
| |
Collapse
|
|
2
|
Mishra A, Kubicki DJ, Boziki A, Chavan RD, Dankl M, Mladenović M, Prochowicz D, Grey CP, Rothlisberger U, Emsley L. Interplay of Kinetic and Thermodynamic Reaction Control Explains Incorporation of Dimethylammonium Iodide into CsPbI 3. ACS ENERGY LETTERS 2022; 7:2745-2752. [PMID: 35990415 PMCID: PMC9380017 DOI: 10.1021/acsenergylett.2c00877] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/15/2022] [Indexed: 05/02/2023]
Abstract
CsPbI3 is a promising material for optoelectronics owing to its thermal robustness and favorable bandgap. However, its fabrication is challenging because its photoactive phase is thermodynamically unstable at room temperature. Adding dimethylammonium (DMA) alleviates this instability and is currently understood to result in the formation of DMA x Cs1-x PbI3 perovskite solid solutions. Here, we use NMR of the 133Cs and 13C local structural probes to show that these solid solutions are not thermodynamically stable, and their synthesis under thermodynamic control leads to a segregated mixture of yellow one-dimensional DMAPbI3 phase and δ-CsPbI3. We show that mixed-cation DMA x Cs1-x PbI3 perovskite phases only form when they are kinetically trapped by rapid antisolvent-induced crystallization. We explore the energetics of DMA incorporation into CsPbI3 using first-principles calculations and molecular dynamics simulations and find that this process is energetically unfavorable. Our results provide a complete atomic-level picture of the mechanism of DMA-induced stabilization of the black perovskite phase of CsPbI3 and shed new light on this deceptively simple material.
Collapse
Affiliation(s)
- Aditya Mishra
- Laboratory
of Magnetic Resonance, Institut des Sciences et Ingénierie
Chimiques, École Polytechnique Fédérale
de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Dominik J. Kubicki
- Laboratory
of Magnetic Resonance, Institut des Sciences et Ingénierie
Chimiques, École Polytechnique Fédérale
de Lausanne (EPFL), 1015 Lausanne, Switzerland
- Department
of Physics, University of Warwick, CV4 7AL, Coventry, United Kingdom
| | - Ariadni Boziki
- Laboratory
of Computational Chemistry and Biochemistry, Institut des Sciences
et Ingénierie Chimiques, École
Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Rohit D. Chavan
- Institute
of Physical Chemistry, Polish Academy of
Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Mathias Dankl
- Laboratory
of Computational Chemistry and Biochemistry, Institut des Sciences
et Ingénierie Chimiques, École
Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Marko Mladenović
- Laboratory
of Computational Chemistry and Biochemistry, Institut des Sciences
et Ingénierie Chimiques, École
Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Daniel Prochowicz
- Institute
of Physical Chemistry, Polish Academy of
Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Clare P. Grey
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Ursula Rothlisberger
- Laboratory
of Computational Chemistry and Biochemistry, Institut des Sciences
et Ingénierie Chimiques, École
Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Lyndon Emsley
- Laboratory
of Magnetic Resonance, Institut des Sciences et Ingénierie
Chimiques, École Polytechnique Fédérale
de Lausanne (EPFL), 1015 Lausanne, Switzerland
| |
Collapse
|
|
3
|
Zhang WH, Chen L, Zou ZP, Nan ZA, Shi JL, Luo QP, Hui Y, Li KX, Wang YJ, Zhou JZ, Yan JW, Mao BW. Defect Passivation by a Multifunctional Phosphate Additive toward Improvements of Efficiency and Stability of Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31911-31919. [PMID: 35796315 DOI: 10.1021/acsami.2c05956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The quality of perovskite films plays a crucial role in the performance of the corresponding devices. However, the commonly employed perovskite polycrystalline films often contain a high density of defects created during film production and cell operation, including unsaturated coordinated Pb2+ and Pb0, which can act as nonradiative recombination centers, thus reducing open-circuit voltage. Effectively eliminating both kinds of defects is an important subject of research to improve the power conversion efficiency (PCE). Here, we employ hydrogen octylphosphonate potassium (KHOP) as a multifunctional additive to passivate defects. The molecule is introduced into perovskite precursor solution to regulate the perovskite film growth process by coordinating with Pb, which can not only passivate the Pb2+ defect but also effectively inhibit the production of Pb0; at the same time, the presence of K+ reduces device hysteresis by inhibiting I- migration and finally realizes double passivation of Pb2+ and I--based defects. Moreover, the moderate hydrophobic alkyl chain in the molecule improves the moisture stability. Ultimately, the optimal efficiency can reach 22.21%.
Collapse
Affiliation(s)
- Wen-Han Zhang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Liang Chen
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ze-Ping Zou
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Zi-Ang Nan
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jue-Li Shi
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Qing-Peng Luo
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yong Hui
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Kai-Xuan Li
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yan-Jie Wang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jian-Zhang Zhou
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jia-Wei Yan
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Bing-Wei Mao
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| |
Collapse
|