UM  > INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Affiliated with RCfalse
Status已發表Published
Interfacial gradient energy band alignment modulation via ion exchange reaction toward efficient and stable methylammonium-free Dion-Jacobson quasi-2D perovskite solar cells
Su, Pengyu1; Bai, Le2; Bi, Huan2; Liu, Baibai2; Chen, Shi3; Lee, Donghwa4; Yang, Hua5; Chen, Cong6; Zang, Zhigang2; Chen, Jiangzhao2
2021-09-15
Source PublicationJournal of Power Sources
ISSN0378-7753
Volume506
Abstract

Dion-Jacobson (DJ) quasi-2D perovskite solar cells (PSCs) have attracted significant attention owing to its greater potentials in realizing efficient and stable quasi 2D PSCs as compared to Ruddlesden–Popper counterpart. To further enhance power conversion efficiency (PCE) and stability, the fabrication of methylammonium-free formamidinium (FA)-based DJ quasi-2D PSCs is highly desirable. Herein, we report a strategy for constructing gradient energy band alignment by achieving gradient Br doping (GBD) via in situ ion exchange reaction between I and Br in FA-based DJ quasi-2D PSCs. First, the gradient energy band alignment can facilitate carrier transport, extraction and transfer. Second, the improved crystallinity and reduced defect density due to recrystallization process are realized after FABr treatment. Finally, the incorporation of Br also contributes to increased device stability. The device with GBD achieves a much higher PCE of 16.75% than control device (13.78%), which is mainly as a consequence of a significantly boosted V from 0.970 V to 1.107 V due to suppressed bulk and interfacial nonradiative recombination. The unencapsulated device with GBD maintains 93% of its initial PCE after aging under the relative humidity range of 15–20% for 1600 h, and 91% after aging at 60 °C for 400 h.

KeywordDion-jacobson Perovskite Gradient Energy Band Alignment Ion Exchange Methylammonium-free Quasi-2d Perovskite Solar Cells
DOI10.1016/j.jpowsour.2021.230213
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000684998500003
Scopus ID2-s2.0-85109198203
Fulltext Access
Citation statistics
Cited Times [WOS]:7   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorChen, Cong; Chen, Jiangzhao
Affiliation1.School of Electronic Information Engineering, Yangtze Normal University, Chongqing, 408100, China
2.Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
3.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Avenida da Universidade, 999078, China
4.Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
5.Spallation Neutron Source Science Center, Institute of High Energy Physics, University of Chinese Academy of Sciences (CAS), Dongguan, 523803, China
6.School of Material Science and Engineering, State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin, Dingzigu Road 1, 300130, China
Recommended Citation
GB/T 7714
Su, Pengyu,Bai, Le,Bi, Huan,et al. Interfacial gradient energy band alignment modulation via ion exchange reaction toward efficient and stable methylammonium-free Dion-Jacobson quasi-2D perovskite solar cells[J]. Journal of Power Sources,2021,506.
APA Su, Pengyu,Bai, Le,Bi, Huan,Liu, Baibai,Chen, Shi,Lee, Donghwa,Yang, Hua,Chen, Cong,Zang, Zhigang,&Chen, Jiangzhao.(2021).Interfacial gradient energy band alignment modulation via ion exchange reaction toward efficient and stable methylammonium-free Dion-Jacobson quasi-2D perovskite solar cells.Journal of Power Sources,506.
MLA Su, Pengyu,et al."Interfacial gradient energy band alignment modulation via ion exchange reaction toward efficient and stable methylammonium-free Dion-Jacobson quasi-2D perovskite solar cells".Journal of Power Sources 506(2021).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Su, Pengyu]'s Articles
[Bai, Le]'s Articles
[Bi, Huan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Su, Pengyu]'s Articles
[Bai, Le]'s Articles
[Bi, Huan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Su, Pengyu]'s Articles
[Bai, Le]'s Articles
[Bi, Huan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.