Effective Passivation with Size-Matched Alkyldiammonium Iodide for High-Performance Inverted Perovskite Solar Cells

Liu, Sanwan1; Guan, Xinyu1; Xiao, Wenshan2; Chen, Rui1; Zhou, Jing1; Ren, Fumeng1; Wang, Jianan1; Chen, Weitao1; Li, Sibo3; Qiu, Longbin3; Zhao, Yan2,4; Liu, Zonghao1,5; Chen, Wei1,5,6

2022-07-01

10.1002/adfm.202205009

ADVANCED FUNCTIONAL MATERIALS   Impact Factor & Quartile

1616-301X

1616-3028

Organic ammonium salts have been widely used for defect passivation to suppress nonradiative charge recombination in perovskite solar cells (PSCs). However, they are prone to form undesirable in-plane favored 2D perovskites with poor charge transport capability that hamper device performance. Herein, the defects passivation role of alkyldiammonium including 1.6-hexamethylenediamine dihydriodide (HDAI(2)), 1,3-propanediamine dihydriodide (PDAI(2)), and 1.4-butanediamine dihydriodide (BDAI(2)) for formamidinium-cesium perovskite is systematically investigated. With help of density functional theory (DFT) calculations, BDA with suitable size can synergistically passivate two defect sites on perovskite surfaces, showing the best defect passivation effect among the above three alkyldiammonium salts. Perovskite films based on BDAI(2) modification are found to keep the 3D perovskite phase with considerably reduced trap-state density, and enhanced carrier extraction. As a result, the BDAI(2)-modified devices deliver impressive efficiencies of 23.1% and 20.9% for inverted PSCs on the rigid and flexible substrates, respectively. Moreover, the corresponding encapsulated rigid devices maintain 92% of the initial efficiency after operating under continuous 1-sun illumination with the maximum power point tracking for 1000 h. Furthermore, the mechanical flexibility of the BDAI(2)-modified flexible device is also improved due to the release of residual stress.

alkyldiammonium ligands defect passivation perovskite solar cells stability

SCI ; EI

English

NI Journal Papers

Others

National Key Research and Development Project funding from the Ministry of Science and Technology of China[2021YFB3800104] ; National Natural Science Foundation of China["51822203","51861145404","52002140","U20A20252","62105293"] ; Natural Science Foundation of Hubei Province[ZRMS2020001132] ; Self-determined and Innovative Research Funds of HUST[2020kfyXJJS008] ; Shenzhen Science and Technology Innovation Committee[JCYJ20180507182257563] ; Innovation Project of Optics Valley Laboratory[OVL2021BG008]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000822963500001

WILEY-V C H VERLAG GMBH

20222812355049

Defects ; Density functional theory ; Efficiency ; Maximum power point trackers ; Passivation ; Perovskite solar cells ; Salts

Minerals:482.2 ; Protection Methods:539.2.1 ; Solar Cells:702.3 ; Electric Equipment:704.2 ; Production Engineering:913.1 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Huazhong Univ Sci & Technol HUST, Wuhan Natl Lab Optoelect WNLO, Wuhan 430074, Hubei, Peoples R China
2.Wuhan Univ Technol, Int Sch Mat Sci & Engn, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China
3.Southern Univ Sci & Technol, SUSTech Energy Inst Carbon Neutral, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
4.Wuhan Univ, Inst Technol Sci, Wuhan 430072, Hubei, Peoples R China
5.Opt Valley Lab, Wuhan 430074, Hubei, Peoples R China
6.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen Key Lab Nanobiomech, Shenzhen 518055, Guangdong, Peoples R China

Liu, Sanwan,Guan, Xinyu,Xiao, Wenshan,et al. Effective Passivation with Size-Matched Alkyldiammonium Iodide for High-Performance Inverted Perovskite Solar Cells[J]. ADVANCED FUNCTIONAL MATERIALS,2022,32.

Liu, Sanwan.,Guan, Xinyu.,Xiao, Wenshan.,Chen, Rui.,Zhou, Jing.,...&Chen, Wei.(2022).Effective Passivation with Size-Matched Alkyldiammonium Iodide for High-Performance Inverted Perovskite Solar Cells.ADVANCED FUNCTIONAL MATERIALS,32.

Liu, Sanwan,et al."Effective Passivation with Size-Matched Alkyldiammonium Iodide for High-Performance Inverted Perovskite Solar Cells".ADVANCED FUNCTIONAL MATERIALS 32(2022).