Application of graphene in tandem organic solar cells

Author

Tong, Shi Wun ; Wang, Yu ; Ng, Man-Fai ; Loh, Kian Ping

Author_Institution

Dept. of Chem., Nat. Univ. of Singapore, Singapore, Singapore

fYear

2011

fDate

18-21 Oct. 2011

Firstpage

112

Lastpage

115

Abstract

A highly conductive and transparent graphene film is deployed as an efficient intermediate layer (IML) in tandem organic photovoltaic cells. Tandem cells utilizing transition metal oxide modified graphene IML demonstrate a high open circuit voltage (V_oc) of 1.13 V in series connection. The value of V_oc from tandem cell is very close to the sum of V_oc attained from two individual subcells (0.58 V) that confirms the perfect ohmic contact at the photoactive layer/graphene interface. The UPS result showed the work function of graphene can be increased effectively to ensure good charge collection with different thickness of MoO₃ layer.

Keywords

graphene; ohmic contacts; photovoltaic cells; solar cells; thin films; work function; C; efficient intermediate layer; graphene interface; high open circuit voltage; highly conductive graphene film; highly transparent graphene film; ohmic contact; photoactive layer; series connection; tandem organic photovoltaic cells; tandem organic solar cells; transition metal oxide; two individual subcells; work function; Artificial intelligence; Indium tin oxide; Photovoltaic cells;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology Materials and Devices Conference (NMDC), 2011 IEEE

Conference_Location

Jeju

Print_ISBN

978-1-4577-2139-7

Type

conf

DOI

10.1109/NMDC.2011.6155323

Filename

6155323