Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 510, Issue -, Pages 118-126Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2017.09.056
Keywords
Perovskite solar cells; Mixed cations; Hole-conductor-free; Carbon electrode
Categories
Funding
- NSFC [51572072, 21402045]
- Foundation of Ministry of Educational of China [20114208110004]
- Wuhan Science and Technology Bureau of Hubei Province of China [2013010602010209]
- Educational commission of Hubei Province of China [D20141006]
- Department of Science & Technology of Hubei Province of China [2015CFA118]
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ABX(3)-type organic lead halide perovskites have gained increasing attention as light harvester for solar cells due to their high power conversion efficiency (PCE). Recently, it has become a trend to avoid the use of expensive hole-transport materials (HTMs) and precious metals, such as Au, to be competitive in future commercial development. In this study, we fabricated mixed-cation perovskite-based solar cells through one-step spin-coating using methylammonium (CH3NH3+) and formamidinium (HN = CHNH3+) cations to extend the optical absorption range into the red region and enhance the utilization of solar light. The synthesized hole-conductor-free cells with carbon electrode and mixed cations exhibited increased short-circuit current, outperforming the cells prepared with pure methylammonium, and PCE of 10.55%. This paper proposes an efficient approach for fabricating high-performance and low-cost perovskite solar cells. (C) 2017 Elsevier Inc. All rights reserved.
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