Effect of annealing treatment and surface morphology on power conversion in organic photovoltaics

Sung Kyu Park; Yong Hoon Kim; Jeong In Han

doi:10.1143/JJAP.48.081505

Effect of annealing treatment and surface morphology on power conversion in organic photovoltaics

Sung Kyu Park
, Yong Hoon Kim
, Jeong In Han

Department of Chemical and Biochemical Engineering

Korea Electronics Technology Institute

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We investigated the effect of annealing treatment and surface morphology on power conversion efficiency (PCE) of organic photovoltaic (OPV) devices. The bulk-heterojunction OPV devices were fabricated by using poly(3-hexylthiophene) (P3HT) and phenyl-C₆₁-butyric acid methyl ester (PCBM) as a donor and an acceptor material, respectively. Significant changes of surface morphology and grain size were observed by varying annealing temperature, which is possibly due to different diffusion rate of PCBM molecules into the bulk-heterojunction polymer films. From these results, we conclude that differences in surface morphology and grain size are responsible for the significantly different PCE in the OPV devices. Consequently, the PCE is improved from 0.5 to 2.6% combined with the increase of short-circuit current and fill factor by annealing treatment at 150°C.

Original language	English
Pages (from-to)	815051-815053
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	48
Issue number	8 Part 1
DOIs	https://doi.org/10.1143/JJAP.48.081505
State	Published - 2009

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title = "Effect of annealing treatment and surface morphology on power conversion in organic photovoltaics",

abstract = "We investigated the effect of annealing treatment and surface morphology on power conversion efficiency (PCE) of organic photovoltaic (OPV) devices. The bulk-heterojunction OPV devices were fabricated by using poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) as a donor and an acceptor material, respectively. Significant changes of surface morphology and grain size were observed by varying annealing temperature, which is possibly due to different diffusion rate of PCBM molecules into the bulk-heterojunction polymer films. From these results, we conclude that differences in surface morphology and grain size are responsible for the significantly different PCE in the OPV devices. Consequently, the PCE is improved from 0.5 to 2.6\% combined with the increase of short-circuit current and fill factor by annealing treatment at 150°C.",

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T1 - Effect of annealing treatment and surface morphology on power conversion in organic photovoltaics

AU - Park, Sung Kyu

AU - Kim, Yong Hoon

AU - Han, Jeong In

PY - 2009

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N2 - We investigated the effect of annealing treatment and surface morphology on power conversion efficiency (PCE) of organic photovoltaic (OPV) devices. The bulk-heterojunction OPV devices were fabricated by using poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) as a donor and an acceptor material, respectively. Significant changes of surface morphology and grain size were observed by varying annealing temperature, which is possibly due to different diffusion rate of PCBM molecules into the bulk-heterojunction polymer films. From these results, we conclude that differences in surface morphology and grain size are responsible for the significantly different PCE in the OPV devices. Consequently, the PCE is improved from 0.5 to 2.6% combined with the increase of short-circuit current and fill factor by annealing treatment at 150°C.

AB - We investigated the effect of annealing treatment and surface morphology on power conversion efficiency (PCE) of organic photovoltaic (OPV) devices. The bulk-heterojunction OPV devices were fabricated by using poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) as a donor and an acceptor material, respectively. Significant changes of surface morphology and grain size were observed by varying annealing temperature, which is possibly due to different diffusion rate of PCBM molecules into the bulk-heterojunction polymer films. From these results, we conclude that differences in surface morphology and grain size are responsible for the significantly different PCE in the OPV devices. Consequently, the PCE is improved from 0.5 to 2.6% combined with the increase of short-circuit current and fill factor by annealing treatment at 150°C.

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JO - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

IS - 8 Part 1

ER -

Effect of annealing treatment and surface morphology on power conversion in organic photovoltaics

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