Enhancing efficiency of perovskite solar cell via surface microstructuring: superior grain growth and light harvesting effect

TitleEnhancing efficiency of perovskite solar cell via surface microstructuring: superior grain growth and light harvesting effect
Publication TypeJournal Article
Year of Publication2015
AuthorsTathavadekar, MC, Agarkar, SA, Game, OS, Bansode, UP, Kulkarni, SA, Mhaisalkar, SG, Ogale, SB
JournalSolar Energy
Volume112
Pagination12-19
Date PublishedFEB
ISSN0038-092X
KeywordsGrain growth, Light harvesting, Perovskite solar cells, TiO2 nanobeads
Abstract

We have introduced a novel approach to enhance the perovskite solar cell efficiency by controlling the grain growth and light harvesting properties of perovskite crystallites. Instead of using a mesoporous TiO2 layer, we have modified the surface microstructuring of the TiO2 film by dispensing nano assembled TiO2 submicron structures (nanobeads, NBs) on TiO2 compact layer. With this new approach solar cell efficiency was improved significantly through an increase in both J(sc) and V-oc. This high efficiency is attributed to crystallite size of the perovskite phase. These also act as light scattering centers giving higher current density and reduced recombination effects giving higher open circuit voltage. (C) 2014 Elsevier Ltd. All rights reserved.

DOI10.1016/j.solener.2014.11.016
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)3.685
Divison category: 
Physical and Materials Chemistry