Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/35963
Title: | Improving the Morphology Stability of Spiro-OMeTAD Films for Enhanced Thermal Stability of Perovskite Solar Cells | Authors: | SONG, Wenya Rakocevic, Lucija THIRUVALLUR EACHAMBADI, Ragha Qiu, Weiming Bastos, Joao P. Gehlhaar, Robert KUANG, Yinghuan Hadipour, Afshin AERNOUTS, Tom POORTMANS, Jef |
Issue Date: | 2021 | Publisher: | AMER CHEMICAL SOC | Source: | Acs Applied Materials & Interfaces, 13 (37) , p. 44294 -44301 | Abstract: | To guarantee a long lifetime of perovskite-based photovoltaics, the selected materials need to survive relatively hightemperature stress during the solar cell operation. Highly efficient ni-p perovskite solar cells (PSCs) often degrade at high operational temperatures due to morphological instability of the hole transport material 2,2',7,7'-tetrakis (N,N-di-p-methoxyphenyl-amine)9,9'-spirobifluorene (Spiro-OMeTAD). We discovered that the detrimental large-domain spiro-OMeTAD crystallization is caused by the simultaneous presence of tert-butylpyridine (tBP) additive and gold (Au) as a capping layer. Based on this discovery and our understanding, we demonstrated facile strategies that successfully stabilize the amorphous phase of spiro-OMeTAD film. As a result, the thermal stability of n- i-p PSCs is largely improved. After the spiro-OMeTAD films in the PSCs were stressed for 1032 h at 85 degrees C in the dark in nitrogen environment, reference PSCs retained only 22% of their initial average power conversion efficiency (PCE), while the best target PSCs retained 85% relative average PCE. Our work suggests facile ways to realize efficient and thermally stable spiro-OMeTAD containing n-i-p PSCs. | Notes: | Song, WY; Poortmans, J (corresponding author), IMEC, Partner Solliance & Energyville, B-3600 Genk, Belgium.; Song, WY; Poortmans, J (corresponding author), Katholieke Univ Leuven, Dept Elect Engn ESAT, B-3001 Heverlee, Belgium.; Poortmans, J (corresponding author), UHasselt, Inst Mat Res IMO IMOMEC, B-3590 Diepenbeek, Belgium. wenya.song@imec.be; jef.poortmans@imec.be |
Keywords: | spiro-OMe;TAD;morphology stability;perovskite solar cells;thermal stability;n-i-p | Document URI: | http://hdl.handle.net/1942/35963 | ISSN: | 1944-8244 | e-ISSN: | 1944-8252 | DOI: | 10.1021/acsami.1c11227 | ISI #: | WOS:000700877100042 | Rights: | 2021 American Chemical Society | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2022 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Enhanced Thermal Stability of Perovskite Solar Cells_revised.pdf | Peer-reviewed author version | 858.44 kB | Adobe PDF | View/Open |
Improving the Morphology Stability of Spiro-OMeTAD Films for Enhanced Thermal Stability of Perovskite Solar Cells _ Enhanced Reader.pdf Restricted Access | Published version | 15 MB | Adobe PDF | View/Open Request a copy |
SCOPUSTM
Citations
42
checked on Aug 31, 2025
WEB OF SCIENCETM
Citations
38
checked on Sep 2, 2025
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.