Morphological control of conjugated polymers by additive annealing for solar cell applications

Bong Gi Kim; Kyeongwoon Chung; Jinsang Kim

doi:10.1016/j.synthmet.2015.10.014

Morphological control of conjugated polymers by additive annealing for solar cell applications

Bong Gi Kim, Kyeongwoon Chung, Jinsang Kim

Department of Biofibers and Biomaterials Science

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

4 Scopus citations

Abstract

A novel conjugated polymer, PVBT, having a D-A type alternating configuration is synthesized for organic photovoltaic application. It exhibits a bimodal-shaped absorption because of intramolecular charge transfer. Comparison of absorption intensity both in the long and the short wavelength region indicates decent chain planarity of PVBT. Organic photovoltaic devices made of PVBT exhibit better performance compared to identical devices from PVTT having a similar chemical structure due to a deeper HOMO energy level and a lower band-gap of PVBT. Additive assisted annealing further improves the device performance, and film morphology analysis reveals the importance of nano-dimensional phase separation to suppress inner-domain recombination.

Original language	English
Pages (from-to)	25-29
Number of pages	5
Journal	Synthetic Metals
Volume	211
DOIs	https://doi.org/10.1016/j.synthmet.2015.10.014
State	Published - 1 Jan 2016

Keywords

Conjugated polymer
Morphology
Organic photovoltaics
Recombination

UN SDGs

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

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10.1016/j.synthmet.2015.10.014

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title = "Morphological control of conjugated polymers by additive annealing for solar cell applications",

abstract = "A novel conjugated polymer, PVBT, having a D-A type alternating configuration is synthesized for organic photovoltaic application. It exhibits a bimodal-shaped absorption because of intramolecular charge transfer. Comparison of absorption intensity both in the long and the short wavelength region indicates decent chain planarity of PVBT. Organic photovoltaic devices made of PVBT exhibit better performance compared to identical devices from PVTT having a similar chemical structure due to a deeper HOMO energy level and a lower band-gap of PVBT. Additive assisted annealing further improves the device performance, and film morphology analysis reveals the importance of nano-dimensional phase separation to suppress inner-domain recombination.",

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author = "Kim, {Bong Gi} and Kyeongwoon Chung and Jinsang Kim",

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T1 - Morphological control of conjugated polymers by additive annealing for solar cell applications

AU - Kim, Bong Gi

AU - Chung, Kyeongwoon

AU - Kim, Jinsang

PY - 2016/1/1

Y1 - 2016/1/1

N2 - A novel conjugated polymer, PVBT, having a D-A type alternating configuration is synthesized for organic photovoltaic application. It exhibits a bimodal-shaped absorption because of intramolecular charge transfer. Comparison of absorption intensity both in the long and the short wavelength region indicates decent chain planarity of PVBT. Organic photovoltaic devices made of PVBT exhibit better performance compared to identical devices from PVTT having a similar chemical structure due to a deeper HOMO energy level and a lower band-gap of PVBT. Additive assisted annealing further improves the device performance, and film morphology analysis reveals the importance of nano-dimensional phase separation to suppress inner-domain recombination.

AB - A novel conjugated polymer, PVBT, having a D-A type alternating configuration is synthesized for organic photovoltaic application. It exhibits a bimodal-shaped absorption because of intramolecular charge transfer. Comparison of absorption intensity both in the long and the short wavelength region indicates decent chain planarity of PVBT. Organic photovoltaic devices made of PVBT exhibit better performance compared to identical devices from PVTT having a similar chemical structure due to a deeper HOMO energy level and a lower band-gap of PVBT. Additive assisted annealing further improves the device performance, and film morphology analysis reveals the importance of nano-dimensional phase separation to suppress inner-domain recombination.

KW - Conjugated polymer

KW - Morphology

KW - Organic photovoltaics

KW - Recombination

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DO - 10.1016/j.synthmet.2015.10.014

M3 - Article

AN - SCOPUS:84947982784

SN - 0379-6779

VL - 211

SP - 25

EP - 29

JO - Synthetic Metals

JF - Synthetic Metals

ER -

Morphological control of conjugated polymers by additive annealing for solar cell applications

Abstract

Keywords

UN SDGs

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