Journal
NANO ENERGY
Volume 48, Issue -, Pages 536-542Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2018.04.012
Keywords
Perovskite solar cell; Cesium doping; Vapor deposition; Passivation; Gradient absorption layer
Categories
Funding
- Scientific and Technological Support Program in Jiangsu province [BE2014147-2]
- NSFC [61674075, 11274155, 61204050, U1632151]
- Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology of China (Hefei) [SKL 2015 KF 04]
- JSNSFC [BK20150275]
- Jiangsu Shuangchuang Team's and Personal Program
- Fundamental Research Funds for the Central Universities
- Jiangsu Excellent Young Scholar Program
Ask authors/readers for more resources
Mixed cation halide perovskite solar cells (PSCs), in a formula of ABX(3) where A is a mixture of formamidinium (FA) or cesium (Cs) cations, represent a promising new architecture to achieve largely improved stability and higher power conversion efficiency (PCE). While all these mixed-cation PSCs were synthesized via a solution method, we here propose and demonstrate a precisely tunable stack sequence physical-chemical vapor deposition (SS-PCVD) approach to prepare a mixed-cation absorber in CsBr-doped hybrid organic perovskite, which features a beneficial gradient bandgap profile to enable an improvement of PCE from 11.69% in pure FAPbI(3) to 18.22% in mixed-cation PSCs. Remarkably, an excellent stability in ambient exposure for 60 days has been achieved by a proper control of the CsBr cation incorporation and interface passivation. This new approach indicates a simple, precisely tunable and low cost fabrication strategy to implement high performance and scalable mixed-cation halide perovskite solar cells.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available