Oriented Quasi-2D Perovskites for High Performance Optoelectronic Devices

Oriented Quasi-2D Perovskites for High Performance Optoelectronic Devices

© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 30(2018), 51 vom: 22. Dez., Seite e1804771
1. Verfasser: Yang, Rong (VerfasserIn)
Weitere Verfasser: Li, Renzhi, Cao, Yu, Wei, Yingqiang, Miao, Yanfeng, Tan, Wen Liang, Jiao, Xuechen, Chen, Hong, Zhang, Liangdong, Chen, Qing, Zhang, Huotian, Zou, Wei, Wang, Yuming, Yang, Ming, Yi, Chang, Wang, Nana, Gao, Feng, McNeill, Christopher R, Qin, Tianshi, Wang, Jianpu, Huang, Wei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article multiple quantum wells perovskites solar cells stability two dimension
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520 |a Quasi-2D layered organometal halide perovskites have recently emerged as promising candidates for solar cells, because of their intrinsic stability compared to 3D analogs. However, relatively low power conversion efficiency (PCE) limits the application of 2D layered perovskites in photovoltaics, due to large energy band gap, high exciton binding energy, and poor interlayer charge transport. Here, efficient and water-stable quasi-2D perovskite solar cells with a peak PCE of 18.20% by using 3-bromobenzylammonium iodide are demonstrated. The unencapsulated devices sustain over 82% of their initial efficiency after 2400 h under relative humidity of ≈40%, and show almost unchanged photovoltaic parameters after immersion into water for 60 s. The robust performance of perovskite solar cells results from the quasi-2D perovskite films with hydrophobic nature and a high degree of electronic order and high crystallinity, which consists of both ordered large-bandgap perovskites with the vertical growth in the bottom region and oriented small-bandgap components in the top region. Moreover, due to the suppressed nonradiative recombination, the unencapsulated photovoltaic devices can work well as light-emitting diodes (LEDs), exhibiting an external quantum efficiency of 3.85% and a long operational lifetime of ≈96 h at a high current density of 200 mA cm-2 in air 
650 4 |a Journal Article 
650 4 |a multiple quantum wells 
650 4 |a perovskites 
650 4 |a solar cells 
650 4 |a stability 
650 4 |a two dimension 
700 1 |a Li, Renzhi  |e verfasserin  |4 aut 
700 1 |a Cao, Yu  |e verfasserin  |4 aut 
700 1 |a Wei, Yingqiang  |e verfasserin  |4 aut 
700 1 |a Miao, Yanfeng  |e verfasserin  |4 aut 
700 1 |a Tan, Wen Liang  |e verfasserin  |4 aut 
700 1 |a Jiao, Xuechen  |e verfasserin  |4 aut 
700 1 |a Chen, Hong  |e verfasserin  |4 aut 
700 1 |a Zhang, Liangdong  |e verfasserin  |4 aut 
700 1 |a Chen, Qing  |e verfasserin  |4 aut 
700 1 |a Zhang, Huotian  |e verfasserin  |4 aut 
700 1 |a Zou, Wei  |e verfasserin  |4 aut 
700 1 |a Wang, Yuming  |e verfasserin  |4 aut 
700 1 |a Yang, Ming  |e verfasserin  |4 aut 
700 1 |a Yi, Chang  |e verfasserin  |4 aut 
700 1 |a Wang, Nana  |e verfasserin  |4 aut 
700 1 |a Gao, Feng  |e verfasserin  |4 aut 
700 1 |a McNeill, Christopher R  |e verfasserin  |4 aut 
700 1 |a Qin, Tianshi  |e verfasserin  |4 aut 
700 1 |a Wang, Jianpu  |e verfasserin  |4 aut 
700 1 |a Huang, Wei  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 30(2018), 51 vom: 22. Dez., Seite e1804771  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnns 
773 1 8 |g volume:30  |g year:2018  |g number:51  |g day:22  |g month:12  |g pages:e1804771 
856 4 0 |u http://dx.doi.org/10.1002/adma.201804771  |3 Volltext 
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