ITO replacement;
Silver grids;
Embedded electrodes;
Polymer solar cells;
Reverse nanoimprinting transfer;
Inkjet printing;
INDIUM-TIN-OXIDE;
CURRENT COLLECTING GRIDS;
ELECTRODE GRIDS;
LARGE-AREA;
D O I:
10.1016/j.solmat.2014.03.024
中图分类号:
TE [石油、天然气工业];
TK [能源与动力工程];
学科分类号:
0807 ;
0820 ;
摘要:
We combine inkjet printed silver grids and reverse nanoimprinting transfer to demonstrate front electrode structures embedded within the substrate for indium tin oxide (ITO) replacement in organic solar cells. The smooth interface between Ag grid and transparent semiconductor polymer PEDOT:PSS improves the topology of the successive layers. In turn, this results in overall good photovoltaic performance including high fill factor and no shunting. By modelling the shadowing and resistive losses as a function of the separation between grid lines, the optimal grid structure is identified, which we then confirm experimentally. Inkjet printed ITO-free solar cells showed slightly higher performance than the ITO based reference. (C) 2014 Elsevier B.V. All rights reserved.