標題: Solvent-assisted crystallization via a delayed-annealing approach for highly efficient hybrid mesoscopic/planar perovskite solar cells
作者: Sutanto, Albertus Adrian
Lan, Shiang
Cheng, Chih-Fu
Mane, Sandeep B.
Wu, Hui-Ping
Leonardus, Mario
Xie, Meng-Yu
Yeh, Shih-Chieh
Tseng, Chiao-Wei
Chen, Chin-Ti
Diau, Eric Wei-Guang
Hung, Chen-Hsiung
應用化學系
應用化學系分子科學碩博班
Department of Applied Chemistry
Institute of Molecular science
關鍵字: Perovskite solar cells;Hybrid mesoscopic;Solvent assisted crystallization;Delayed annealing;Perovskite morphology
公開日期: 1-Dec-2017
摘要: The formation of a dense and uniform perovskite film with large grain is an important factor for getting excellent device performance. Here, we report an optimized solvent-assisted crystallization procedure followed by a delayed annealing for easy and reproducible fabrications of perovskite solar cells with a hybrid mesoscopic configuration. The working electrode contains a mesoporous TiO2 scaffold layer of 100 nm deposited on FTO substrate with a thin TiO2 blocking layer. The devices in this study were assembled using all commercially available materials without any extensive modification. Formation of uniform and pin-hole free perovskite nanocrystals with film thickness 200 nm on top of the scaffold layer was achieved via an optimized solvent assisted crystallization method. A much smoother perovskite layer was achieved with a delayed annealing for a certain period. The best performing device was obtained at the annealing delayed for 60 min, giving the power conversion efficiency 16.9% with an average value 15.4% obtained from 60 devices.
URI: http://dx.doi.org/10.1016/j.solmat.2017.07.043
http://hdl.handle.net/11536/146117
ISSN: 0927-0248
DOI: 10.1016/j.solmat.2017.07.043
期刊: SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume: 172
起始頁: 270
結束頁: 276
Appears in Collections:Articles