journal article·2013-12

Enhancement of organic solar cell efficiency by patterning the PEDOT:PSS hole transport layer using nanoimprint lithography

Je-Hong Choi, Hak-Jong Choi, Ju-Hyeon Shin, Hyeong-Pil Kim, Jin Jang, Heon Lee

Organic Electronics· Volume 14· Issue 12
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Abstract

Abstract In order to improve the conversion efficiency of organic photovoltaic (OPV) cells, nano-patterned poly (3,4-ethylenedioxythiophene) poly (styrenesulfonate) (PEDOT:PSS) was used as a hole transfer layer (HTL). Using nanoimprint lithography, a process that is easily applied to large-area substrates, a spherical array of PEDOT:PSS droplets was formed. The effect of the PEDOT:PSS nanostructure was characterized by optical and electrical measurements. Because the hemispherical array of PEDOT:PSS scatters light efficiently, absorption of the incident light increases when the nanostructured layer is employed. The conversion efficiency of the nano-patterned OPV cells is 25% larger than that of non-patterned OPV cells, due to the increase in short-circuit current (Jsc).
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Research context

OpenAlex topics: Organic Electronics and Photovoltaics · Nanowire Synthesis and Applications · Near-Field Optical Microscopy

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