Fast Thermal Annealing of CH3NH3PbI3-xClx Films for Improving Hybrid Photovoltaics

摘要：

　　Organic-inorganic hybrid perovskite materials offer the potential for realization of low-cost and flexible next-generation solar cells fabricated by low-temperature solution processing.Although efficiencies of perovskite solar cells have dramatically improved up to 22.1% within the past 6 years, there is still considerable room for further improvement in device efficiency through development of smooth and large grain size perovskite films.Commonly, the smooth perovskite layers and large grains are alternative to CH3NH3PbI3-xClx.However, the previous one-step fabrication of CH3NH3PbI3-xClx using PbCl2 needs long annealing time.Herein, the active layer, a noncontinuous CH3NH3PbI3-xClx film with micrometre-level crystalline grain, was fabricated using a one-step spin-coating process followed by high-temperature annealing and exhibited an increased efficiency of 9.93%.This finding enables the formation of larger grain size perovskite films and the demonstration of efficient perovskite heterojunction solar cells.

关键词： Perovskite Thermal annealing CH3NH3PbI3-xClx Heterojunction

作者: Jian-hong Zhao Lei-ming Yu Tao-yu Zou Zhen-fang Qiao Li LUO Yu-min Zhang Xiao-yan Wang Hai Wang

作者单位: Key laboratory of Yunnan Provincial Higher Education Institutions for Organic Optoelectronic Materia Key laboratory of Yunnan Provincial Higher Education Institutions for Organic Optoelectronic Materia Department of Physics and Astronomy, Yunnan University, Kunming 650091, China

会议类型: 国际会议

会议名称: The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)

会议地点: 重庆

会议语种:英文

页码: 923-928

在线出版日期: 2016-07-25（万方平台首次上网日期，不代表论文的发表时间）