期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 28, 页码 17999-18007出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b02701
关键词
atomic layer deposition; hole-conductor-free perovskite solar cells; hole-blocking layer; carbon counter electrode; long-term stability
资金
- Ph.D. Programs Foundation of Ministry of Education of China [20114208110004]
- National Natural Science Foundation of China [21402045, 51102087]
- Program for Middle-aged and Young Talents from Educational Commission of Hubei Province [Q20120103]
- Natural Science Foundation of Hubei Province of China [2014CFB167, 2015CFA118]
- Wuhan Science and Technology Bureau of Hubei Province of China [2013010501010140]
In this study we design and construct high efficiency, low-cost, highly stable, hole-conductor-free, solid-state perovskite solar cells, with TiO2 as the electron transport layer (ETL) and carbon as the hole collection layer, in ambient air. First, uniform, pinhole-free TiO2 films of various thicknesses were deposited on fluorine-doped tin oxide (FTO) electrodes by atomic layer deposition (ALD) technology. Based on these TiO2 films, a series of hole conductor-free perovskite solar cells (PSCs) with carbon as the counter electrode were fabricated in ambient air, and the effect of thickness of TiO2 compact film on the device performance was investigated in detail. It was found that the performance of PSCs depends on the thickness of the compact layer due to the difference in surface roughness, transmittance, charge transport resistance, electron hole recombination rate, and the charge lifetime. The best-performance devices based on optimized TiO2 compact film (by 2000 cycles ALD) can achieve power conversion efficiencies (PCEs) of as high as 7.82%. Furthermore, they can maintain over 96% of their initial PCE after 651 h (about 1 month) storage in ambient air, thus exhibiting excellent long-term stability.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据