Study of the effect of annealing process on the performance of P3HT/PCBM photovoltaic devices using scanning-probe microscopy

Yu Ching Huang; Yu Chia Liao; Shao Sian Li; Ming Chung Wu; Chun Wei Chen; Wei Fang Su

doi:10.1016/j.solmat.2008.10.027

Study of the effect of annealing process on the performance of P3HT/PCBM photovoltaic devices using scanning-probe microscopy

Yu Ching Huang, Yu Chia Liao, Shao Sian Li, Ming Chung Wu, Chun Wei Chen, Wei Fang Su

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

109 Citations (Scopus)

Abstract

We have studied the effect of annealing process on the performance of photovoltaic devices based on the bulk heterojunction of poly(3-hexylthiophene) and [6,6]-phenyl-C₆₁ butyric acid methyl ester (P3HT/PCBM). By means of atomic force microscopy (AFM) and scanning of near-field microscopy (SNOM), we can observe the morphology evolution of the annealed P3HT/PCBM composite films. We also studied the changes of optical properties by absorption spectroscopy and the changes of composition distribution of annealed composite films. The results indicate the P3HT in the composite film gradually becomes an ordered structure with annealing. The ordered P3HT facilitates the charge transport. However, the film exhibits a large-scale (1 μm) PCBM aggregation after annealing for an extended period of time. The disrupted bi-continous phase retards the charge transport. Thus, the device efficiency reaches the highest (2.308%) after annealing at 140 °C for 30 min but decreases to 0.810% after 60 min annealing.

Original language	English
Pages (from-to)	888-892
Number of pages	5
Journal	Solar Energy Materials and Solar Cells
Volume	93
Issue number	6-7
DOIs	https://doi.org/10.1016/j.solmat.2008.10.027
Publication status	Published - Jun 1 2009
Externally published	Yes

Keywords

Anneal process
Atomic force microscopy
Photovoltaic
Scanning near-field microscopy

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Electronic, Optical and Magnetic Materials
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solmat.2008.10.027

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title = "Study of the effect of annealing process on the performance of P3HT/PCBM photovoltaic devices using scanning-probe microscopy",

abstract = "We have studied the effect of annealing process on the performance of photovoltaic devices based on the bulk heterojunction of poly(3-hexylthiophene) and [6,6]-phenyl-C61 butyric acid methyl ester (P3HT/PCBM). By means of atomic force microscopy (AFM) and scanning of near-field microscopy (SNOM), we can observe the morphology evolution of the annealed P3HT/PCBM composite films. We also studied the changes of optical properties by absorption spectroscopy and the changes of composition distribution of annealed composite films. The results indicate the P3HT in the composite film gradually becomes an ordered structure with annealing. The ordered P3HT facilitates the charge transport. However, the film exhibits a large-scale (1 μm) PCBM aggregation after annealing for an extended period of time. The disrupted bi-continous phase retards the charge transport. Thus, the device efficiency reaches the highest (2.308%) after annealing at 140 °C for 30 min but decreases to 0.810% after 60 min annealing.",

keywords = "Anneal process, Atomic force microscopy, Photovoltaic, Scanning near-field microscopy",

author = "Huang, {Yu Ching} and Liao, {Yu Chia} and Li, {Shao Sian} and Wu, {Ming Chung} and Chen, {Chun Wei} and Su, {Wei Fang}",

year = "2009",

month = jun,

day = "1",

doi = "10.1016/j.solmat.2008.10.027",

language = "English",

volume = "93",

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journal = "Solar Energy Materials and Solar Cells",

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TY - JOUR

T1 - Study of the effect of annealing process on the performance of P3HT/PCBM photovoltaic devices using scanning-probe microscopy

AU - Huang, Yu Ching

AU - Liao, Yu Chia

AU - Li, Shao Sian

AU - Wu, Ming Chung

AU - Chen, Chun Wei

AU - Su, Wei Fang

PY - 2009/6/1

Y1 - 2009/6/1

N2 - We have studied the effect of annealing process on the performance of photovoltaic devices based on the bulk heterojunction of poly(3-hexylthiophene) and [6,6]-phenyl-C61 butyric acid methyl ester (P3HT/PCBM). By means of atomic force microscopy (AFM) and scanning of near-field microscopy (SNOM), we can observe the morphology evolution of the annealed P3HT/PCBM composite films. We also studied the changes of optical properties by absorption spectroscopy and the changes of composition distribution of annealed composite films. The results indicate the P3HT in the composite film gradually becomes an ordered structure with annealing. The ordered P3HT facilitates the charge transport. However, the film exhibits a large-scale (1 μm) PCBM aggregation after annealing for an extended period of time. The disrupted bi-continous phase retards the charge transport. Thus, the device efficiency reaches the highest (2.308%) after annealing at 140 °C for 30 min but decreases to 0.810% after 60 min annealing.

AB - We have studied the effect of annealing process on the performance of photovoltaic devices based on the bulk heterojunction of poly(3-hexylthiophene) and [6,6]-phenyl-C61 butyric acid methyl ester (P3HT/PCBM). By means of atomic force microscopy (AFM) and scanning of near-field microscopy (SNOM), we can observe the morphology evolution of the annealed P3HT/PCBM composite films. We also studied the changes of optical properties by absorption spectroscopy and the changes of composition distribution of annealed composite films. The results indicate the P3HT in the composite film gradually becomes an ordered structure with annealing. The ordered P3HT facilitates the charge transport. However, the film exhibits a large-scale (1 μm) PCBM aggregation after annealing for an extended period of time. The disrupted bi-continous phase retards the charge transport. Thus, the device efficiency reaches the highest (2.308%) after annealing at 140 °C for 30 min but decreases to 0.810% after 60 min annealing.

KW - Anneal process

KW - Atomic force microscopy

KW - Photovoltaic

KW - Scanning near-field microscopy

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JO - Solar Energy Materials and Solar Cells

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IS - 6-7

ER -

Study of the effect of annealing process on the performance of P3HT/PCBM photovoltaic devices using scanning-probe microscopy

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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