Broadband absorption enhancement in hole-transport-layer-free perovskite solar cell by grating structure  

作　　者：Hamideh Talebi Farzin Emami Esmat Rafiee 

机构地区：[1]Nano-Optoelectronic Research Center,Electronic Department,Shiraz University of Technology,Shiraz,Iran [2]Department of Electrical Engineering,Faculty of Engineering,Alzahra University,Tehran,Iran

出　　处：《Optoelectronics Letters》2023年第10期587-592,共6页光电子快报（英文版）

摘　　要：Recently,the hole transport layer-free planar perovskite solar cells(HTL-free PSCs)have attracted intense attention.However,the poor absorption of light in the wavelengths longer than 800 nm is an important challenge in all configurations of PSCs.In this study,the HTL-free PSC with a gold rectangular grating at back contact is proposed.In order to improve the performance of the solar cell,effects of grating dimensions and periodicity on the absorption of the active layer are numerically investigated.In the improved condition,an absorption enhancement of 25%in the range of 300–1400 nm is obtained compared with the flat electrode-based structure.These improvements are attributed to the coupling of light to surface plasmon polariton(SPP)modes.Also,the electrical simulation results of the improved solar cell demonstrated short-circuit current density and power conversion efficiency of 27.72 mA/cm2 and 18%,respectively.

关 键 词：ABSORPTION LAYER free 

分 类 号：TM914.4[电气工程—电力电子与电力传动]