Duan Jialong, Hu Tianyu, Zhao Yuanyuan, He Benlin, Tang Qunwei
Institute of New Energy Technology, College of Information Science and Technology, Jinan University, Guangzhou, 510632, PR China.
School of Materials Science and Engineering, Ocean University of China, 238 Songling Road, Laoshan District, Qingdao, 266100, P. R. China.
Angew Chem Int Ed Engl. 2018 May 14;57(20):5746-5749. doi: 10.1002/anie.201801837. Epub 2018 Apr 17.
Moisture is the worst enemy for state-of-the-art perovskite solar cells (PSCs). However, the flowing water vapor within nanoporous carbonaceous materials can create potentials. Therefore, it is a challenge to integrate water vapor and solar energies into a single PSC device. We demonstrate herein all-inorganic cesium lead bromide (CsPbBr ) solar cells tailored with carbon electrodes to simultaneously harvest solar and water-vapor energy. Upon interfacial modification and plasma treatment, the bifunctional PSCs yield a maximum power conversion efficiency up to 9.43 % under one sun irradiation according to photoelectric conversion principle and a power output of 0.158 μW with voltage of 0.35 V and current of 0.45 μA in 80 % relative humidity through the flowing potentials at the carbon/water interface. The initial efficiency is only reduced by 2 % on exposing the inorganic PSC with 80 % humidity over 40 days. The successful realization of physical proof-of-concept multi-energy integrated solar cells provides new opportunities of maximizing overall power output.
水分是先进钙钛矿太阳能电池（PSC）的最大敌人。然而，纳米多孔碳质材料中流动的水蒸气可以产生电势。因此，将水蒸气和太阳能整合到单个PSC器件中是一项挑战。我们在此展示了采用碳电极定制的全无机铯铅溴化物（CsPbBr）太阳能电池，以同时收集太阳能和水蒸气能量。经过界面改性和等离子体处理后，根据光电转换原理，双功能PSC在一个太阳光照下的最大功率转换效率高达9.43%，并且在80%相对湿度下，通过碳/水界面的流动电势，在0.35 V电压和0.45 μA电流下的功率输出为0.158 μW。将无机PSC暴露在80%湿度环境下40天，初始效率仅降低2%。物理概念验证多能量集成太阳能电池的成功实现为最大化总功率输出提供了新机遇。
