Effect of the vertical composition gradient of active layer on the performance of bulk-heterojunction organic photovoltaic cell

Young Min Nam; June Huh; Won Ho Jo

doi:10.1063/1.3666061

Effect of the vertical composition gradient of active layer on the performance of bulk-heterojunction organic photovoltaic cell

Young Min Nam, June Huh, Won Ho Jo

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

6 Citations (Scopus)

Abstract

A computational model is developed to investigate the effect of vertical composition gradient on the photovoltaic properties of organic photovoltaic cell based on poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl C ₆₁-butyric acid methyl ester (PCBM). When the photovoltaic properties of model devices with systematic variation of vertical composition distribution are calculated by using this model, it is found that the efficiency increases almost linearly as the concentrations of P3HT and PCBM become richer near anode and cathode, respectively. The larger exciton generation near anode due to enrichment of P3HT near the anode contributes mainly to an increase of the device efficiency by compensating the lower hole mobility of P3HT with shorter pathway to the anode.

Original language	English
Article number	114521
Journal	Journal of Applied Physics
Volume	110
Issue number	11
DOIs	https://doi.org/10.1063/1.3666061
Publication status	Published - 2011 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.3666061

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title = "Effect of the vertical composition gradient of active layer on the performance of bulk-heterojunction organic photovoltaic cell",

abstract = "A computational model is developed to investigate the effect of vertical composition gradient on the photovoltaic properties of organic photovoltaic cell based on poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl C 61-butyric acid methyl ester (PCBM). When the photovoltaic properties of model devices with systematic variation of vertical composition distribution are calculated by using this model, it is found that the efficiency increases almost linearly as the concentrations of P3HT and PCBM become richer near anode and cathode, respectively. The larger exciton generation near anode due to enrichment of P3HT near the anode contributes mainly to an increase of the device efficiency by compensating the lower hole mobility of P3HT with shorter pathway to the anode.",

author = "Nam, {Young Min} and June Huh and Jo, {Won Ho}",

note = "Funding Information: The authors thank the Ministry of Education, Science and Technology (MEST), Korea for financial support through the Global Research Laboratory (GRL) program, and the World Class University (WCU) programs.",

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AU - Nam, Young Min

AU - Huh, June

AU - Jo, Won Ho

N1 - Funding Information: The authors thank the Ministry of Education, Science and Technology (MEST), Korea for financial support through the Global Research Laboratory (GRL) program, and the World Class University (WCU) programs.

PY - 2011/12/1

Y1 - 2011/12/1

N2 - A computational model is developed to investigate the effect of vertical composition gradient on the photovoltaic properties of organic photovoltaic cell based on poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl C 61-butyric acid methyl ester (PCBM). When the photovoltaic properties of model devices with systematic variation of vertical composition distribution are calculated by using this model, it is found that the efficiency increases almost linearly as the concentrations of P3HT and PCBM become richer near anode and cathode, respectively. The larger exciton generation near anode due to enrichment of P3HT near the anode contributes mainly to an increase of the device efficiency by compensating the lower hole mobility of P3HT with shorter pathway to the anode.

AB - A computational model is developed to investigate the effect of vertical composition gradient on the photovoltaic properties of organic photovoltaic cell based on poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl C 61-butyric acid methyl ester (PCBM). When the photovoltaic properties of model devices with systematic variation of vertical composition distribution are calculated by using this model, it is found that the efficiency increases almost linearly as the concentrations of P3HT and PCBM become richer near anode and cathode, respectively. The larger exciton generation near anode due to enrichment of P3HT near the anode contributes mainly to an increase of the device efficiency by compensating the lower hole mobility of P3HT with shorter pathway to the anode.

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Effect of the vertical composition gradient of active layer on the performance of bulk-heterojunction organic photovoltaic cell

Abstract

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