Efficient optical absorption enhancement in organic solar cells by using a 2-dimensional periodic light trapping structure

Feng-Shuo Zu; Xiao-Bo Shi; Jian Liang; Mei-Feng Xu; Chun-Sing Lee; Zhao-Kui Wang; Liang-Sheng Liao

doi:10.1063/1.4884963

Author(s)

Feng-Shuo Zu
Xiao-Bo Shi
Jian Liang
Mei-Feng Xu
Zhao-Kui Wang
Liang-Sheng Liao

Related Research Unit(s)

Centre of Super-Diamond and Advanced Films

Detail(s)

Original language	English
Article number	4884963
Journal / Publication	Applied Physics Letters
Volume	104
Issue number	24
Publication status	Published - 16 Jun 2014

Link(s)

DOI	DOI https://doi.org/10.1063/1.4884963 Final Published version
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Attachment(s)	Documents 5415034.pdf Final Published version, 1.84 MB, PDF Publisher's Copyright Statement This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Feng-Shuo Zu, Xiao-Bo Shi, Jian Liang, Mei-Feng Xu, Chun-Sing Lee, Zhao-Kui Wang, and Liang-Sheng Liao , "Efficient optical absorption enhancement in organic solar cells by using a 2-dimensional periodic light trapping structure", Appl. Phys. Lett. 104, 243904 (2014) and may be found at https://doi.org/10.1063/1.4884963.
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84903209574&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(578f6241-c042-41eb-ab96-81e7ce4c087e).html

Abstract

We have investigated the effects induced by periodic nanosphere arrays on the performance of organic solar cells (OSCs). Two-dimensional periodic arrays of polystyrene nanospheres were formed by using a colloidal lithography method together with plasma etching to trim down the size to various degrees on the substrates of OSCs. It is found that the devices prepared on such substrates can have improved light harvesting, resulting in as high as 35% enhancement in power conversion efficiency over that of the reference devices. The measured external quantum efficiency and finite-difference time-domain simulation reveal that the controlled periodic morphology of the substrate can efficiently increase light scattering in the device and thus enhance the absorption of incident light. © 2014 AIP Publishing LLC.