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In Situ Atmospheric Deposition of Ultrasmooth Nickel Oxide for Efficient Perovskite Solar Cells
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-11-21 00:00:00 , DOI: 10.1021/acsami.8b15503
Baodan Zhao 1 , Lana C. Lee 2 , Le Yang 1, 3 , Andrew J. Pearson 1 , Haizhou Lu 1, 4 , Xiao-Jian She 1 , Linsong Cui 1 , Kelvin H. L. Zhang 2 , Robert L. Z. Hoye 1 , Arfa Karani 1 , Peicheng Xu 1 , Aditya Sadhanala 1 , Neil C. Greenham 1 , Richard H. Friend 1 , Judith L. MacManus-Driscoll 2 , Dawei Di 1
Affiliation  

Organic–inorganic perovskite solar cells have attracted significant attention due to their remarkable performance. The use of alternative metal-oxide charge-transport layers is a strategy to improving device reliability for large-scale fabrication and long-term applications. Here, we report solution-processed perovskite solar cells employing nickel oxide hole-extraction layers produced in situ using an atmospheric pressure spatial atomic-layer deposition system, which is compatible with high-throughput processing of electronic devices from solution. Our sub-nanometer smooth (average roughness of ≤0.6 nm) oxide films enable the efficient collection of holes and the formation of perovskite absorbers with high electronic quality. Initial solar-cell experiments show a power-conversion efficiency of 17.1%, near-unity ideality factors, and a fill factor of >80% with negligible hysteresis. Transient measurements reveal that a key contributor to this performance is the reduced luminescence quenching trap density in the perovskite/nickel oxide structure.

中文翻译:

用于高效钙钛矿太阳能电池的超光滑氧化镍的原位大气沉积

有机-无机钙钛矿太阳能电池由于其出色的性能而引起了广泛的关注。使用替代的金属氧化物电荷传输层是为大规模制造和长期应用提高器件可靠性的一种策略。在这里,我们报道了采用常压空间原子层沉积系统原位生产的,采用氧化镍空穴提取层的固溶钙钛矿太阳能电池,该溶液与溶液中电子器件的高通量处理兼容。我们的亚纳米级光滑(平均粗糙度≤0.6nm)氧化膜可有效收集空穴并形成具有高电子质量的钙钛矿吸收体。最初的太阳能电池实验表明,功率转换效率为17.1%,接近统一的理想因子,填充系数> 80%,滞后可以忽略不计。瞬态测量表明,这种性能的关键因素是钙钛矿/氧化镍结构中发光猝灭阱密度的降低。
更新日期:2018-11-21
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