Improvement in the Performance of Inverted 3D/2D Perovskite Solar Cells by Ambient Exposure

Wang, Yantao1; Lin, Jingyang1,2; He, Yanling1; Zhang, Yi1; Liang, Qiong3; Liu, Fangzhou1; Zhou, Zhiwei4; Chan, Christopher C. S.5; Li, Gang3; Feng, Shien-Ping4,6; Ng, Alan Man Ching2; Wong, Kam Sing5; Popovic, Jasminka7; Djurisic, Aleksandra B.1

2022-04-01

10.1002/solr.202200224

Solar RRL   影响因子和分区

2367-198X

Perovskite solar cells (PSCs) are known to be sensitive to the exposure to ambient humidity, which typically results in the degradation and deterioration of performance, although positive effects of exposure to moisture have also been reported, due to recrystallization of the perovskite. Common approach to improve stability is to use 3D/2D perovskite active layer, where 2D capping layer is prepared by spin coating the bulky organic cation halide. Herein, it is shown that optimizing the exposure of the capping layer prepared by spin coating phenylethylammonium iodide (PEAI) to ambient atmosphere results in substantial improvement of the PSC performance. Furthermore, the initial effects of PEAI treatment are dependent on the NiOx/perovskite interface, but in all cases except at very high humidity (80-85% RH) optimized exposure to ambient results in improved performance. The variations in device performance with PEAI treatment and ambient exposure can be attributed to defect passivation and changes in the charge extraction due to energy-level alignment at the interfaces. The best performing devices have passivation of NiOx/perovskite interface and PEAI treatment of top surface followed by exposure to ambient atmosphere at RH of 40-45%, which results in the power conversion efficiency increase from 20.3% to 22.4%.

3D/2D perovskites ambient exposure interfacial passivation phenylethylammonium iodide (PEAI) modification perovskite solar cells

SCI ; EI

英语

其他

RGC CRF grant["C5037-18G","C7018-20G"] ; Shenzhen Science and Technology Commission["JCYJ20170818141216288","JCYJ20200109105003940"] ; "Research Cooperability" Program of the Croatian Science Foundation - European Union from the European Social Fund under the Operational Programme Efficient Human Resources 2014-2020[PZS-2019-02-2068]

Energy & Fuels ; Materials Science

Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000781068600001

WILEY-V C H VERLAG GMBH

20221611981796

Coatings ; Deterioration ; Nickel compounds ; Passivation ; Perovskite solar cells

Minerals:482.2 ; Protection Methods:539.2.1 ; Solar Cells:702.3 ; Coating Materials:813.2 ; Materials Science:951

Web of Science

1.Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, 1088 Xueyuan Rd, Shenzhen 518055, Guangdong, Peoples R China
3.Hong Kong Polytech Univ, Dept Elect & Informat Engn, Hung Hom, 11 Yuk Choi Rd, Hong Kong, Peoples R China
4.Univ Hong Kong, Dept Mech Engn, Pokfulam Rd, Hong Kong, Peoples R China
5.Hong Kong Univ Sci & Technol, Dept Phys, Clearwater Bay, Hong Kong, Peoples R China
6.City Univ Hong Kong, Dept Adv Design & Syst Engn, Kowloon, Hong Kong, Peoples R China
7.Rudjer Boskovic Inst, Div Mat Phys, Bijenicka 54, Zagreb 10000, Croatia

Wang, Yantao,Lin, Jingyang,He, Yanling,et al. Improvement in the Performance of Inverted 3D/2D Perovskite Solar Cells by Ambient Exposure[J]. Solar RRL,2022,6.

Wang, Yantao.,Lin, Jingyang.,He, Yanling.,Zhang, Yi.,Liang, Qiong.,...&Djurisic, Aleksandra B..(2022).Improvement in the Performance of Inverted 3D/2D Perovskite Solar Cells by Ambient Exposure.Solar RRL,6.

Wang, Yantao,et al."Improvement in the Performance of Inverted 3D/2D Perovskite Solar Cells by Ambient Exposure".Solar RRL 6(2022).