Hybrid materials of upcycled Mn3O4 and reduced graphene oxide for a buffer layer in organic solar cells

Authors
Lee, Cheol-HoLee, SunghoYeo, Jun-SeokKang, Gil-SeongNoh, Yong-JinPark, Sae-MiLee, Doh C.Na, Seok-InJoh, Han-Ik
Issue Date
2018-05
Publisher
한국공업화학회
Citation
Journal of Industrial and Engineering Chemistry, v.61, pp.106 - 111
Abstract
Mn3O4 on reduced graphene oxide (r-GO) was easily synthesized by upcycling process of wasting manganese ions which were generated during oxidation reaction from graphite to GO. The yellow-brown GO suspension under acid media before neutralization immediately became black precipitates when the suspension was titrated into the concentrated NaOH solution. The method could convert the wasting manganese ions up to similar to 91 wt% to Mn3O4 to optimize work function in a hole transport layer (HTL) for organic solar cells. The hybrid materials exhibited an ideal electronic structure suitable for HTL, leading to the excellent power conversion efficiency of similar to 3.23%. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
Keywords
PHOTOVOLTAIC CELLS; TRANSPORT LAYERS; HIGHLY EFFICIENT; REDUCTION; PERFORMANCE; OXYGEN; NANOCOMPOSITES; EXFOLIATION; CHEMISTRY; GO; Mn3O4; Graphene oxide; Manganese ion; Recycle; Organic solar cell
ISSN
1226-086X
URI
https://pubs.kist.re.kr/handle/201004/121398
DOI
10.1016/j.jiec.2017.12.006
Appears in Collections:
KIST Article > 2018
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