Lee Yonghui, Lee Seunghwan, Seo Gabseok, Paek Sanghyun, Cho Kyung Taek, Huckaba Aron J, Calizzi Marco, Choi Dong-Won, Park Jin-Seong, Lee Dongwook, Lee Hyo Joong, Asiri Abdullah M, Nazeeruddin Mohammad Khaja
Group for Molecular Engineering of Functional Materials Ecole Polytechnique Fédérale de Lausanne CH-1951 Sion Switzerland.
Division of Materials Science and Engineering Hanyang University 222 Wangsimni-ro Seongdong-gu Seoul 133-791 Korea.
Adv Sci (Weinh). 2018 Mar 25;5(6):1800130. doi: 10.1002/advs.201800130. eCollection 2018 Jun.
Planar perovskite solar cells using low-temperature atomic layer deposition (ALD) of the SnO electron transporting layer (ETL), with excellent electron extraction and hole-blocking ability, offer significant advantages compared with high-temperature deposition methods. The optical, chemical, and electrical properties of the ALD SnO layer and its influence on the device performance are investigated. It is found that surface passivation of SnO is essential to reduce charge recombination at the perovskite and ETL interface and show that the fabricated planar perovskite solar cells exhibit high reproducibility, stability, and power conversion efficiency of 20%.
采用低温原子层沉积(ALD)法制备氧化锡电子传输层(ETL)的平面钙钛矿太阳能电池,具有优异的电子提取和空穴阻挡能力,与高温沉积方法相比具有显著优势。研究了ALD氧化锡层的光学、化学和电学性质及其对器件性能的影响。发现氧化锡的表面钝化对于减少钙钛矿与ETL界面处的电荷复合至关重要,并且所制备的平面钙钛矿太阳能电池具有高重现性、稳定性,功率转换效率达20%。