摘要
薄膜钙钛矿光伏电池的光学设计不仅可以提高其能量转化效率,还可以降低其厚度,增强柔性。基于基本电磁理论,采用时域有限差分法(FDTD)求解麦克斯韦方程组的方法设计一种SiO2电介质纳米球,用来增强入射太阳光耦合进入到薄膜钙钛矿光伏电池的能力,以提高钙钛矿光伏电池的光谱吸收率。分析电介质纳米球的位置、半径和填充率对钙钛矿光伏电池的光谱吸收率和光生电流的影响。结果表明,采用前后双置电介质纳米球的钙钛矿光伏电池的光生电流可以达到25.5 mA/cm^2,比不采用电介质纳米球钙钛矿光伏电池的光生电流提高了14.8%。
The optical design of thin film perovskite photovoltaic cells could not only improve its energy conversion efficiency but also reduce its thickness and enhance its flexibility.A SiO2 dielectric nanosphere was designed using the electromagnetic theory,and the FDTD method was adopted to solve the Maxwell equation groups,to enhance the ability of incident sunlight to couple into thin film perovskite photovoltaic cells,which could improve the spectral absorption of perovskite photovoltaic cells.The effects of the position,radius and filling ratio of the dielectric nanospheres on the spectral absorption and photocurrent of the perovskite photovoltaic cell were analyzed.The results show that the photocurrent of perovskite photovoltaic cells with front-located and rear-located dielectric nanospheres could reach 25.5 mA/cm^2,which was 14.8%higher than that of perovskite photovoltaic cells without dielectric nanospheres.
作者
王富强
梁华旭
林波
程子明
史绪航
陈智超
WANG Fuqiang;LIANG Huaxu;LIN Bo;CHENG Ziming;SHI Xuhang;CHEN Zhichao(School of New Energy, Harbin Institute of Technology(Weihai), Weihai 264209, China;School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2020年第6期97-102,共6页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家重点研发计划(2018YFA0702300)
山东省泰山青年学者项目(tsqn201212105)。
关键词
太阳能
薄膜钙钛矿光伏电池
光学管理
纳米光子结构
辐射传输
时域有限差分法
solar energy
thin film perovskite photovoltaic cells
photon management
nanophotonic structure
radiative transfer
finite difference time domain method
