Fine tuning of HOMO energy levels for low-band-gap photovoltaic copolymers containing cyclopentadithienopyrrole and bithiazole units

Dhalnjaya Patra; Duryodhan Sahu; Harihara Padhy; Dhanjay Kekuda; Chih Wei Chu; Kung Hwa Wei; Hong Cheu Lin

doi:10.1002/macp.201100164

Fine tuning of HOMO energy levels for low-band-gap photovoltaic copolymers containing cyclopentadithienopyrrole and bithiazole units

Dhalnjaya Patra
, Duryodhan Sahu
, Harihara Padhy
, Dhanjay Kekuda
, Chih Wei Chu^*
, Kung Hwa Wei
, Hong Cheu Lin

^*Corresponding author for this work

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

12 Citations (Scopus)

Abstract

Five conjugated LBG polymers P1-P5 consisting of a DTP unit as an electron donor and various bithiazole units as electron acceptors are designed and synthesized for photovoltaic applications. The effects of the electron-deficient bithiazole derivatives on the thermal, optical, electrochemical, and photovoltaic properties are investigated. The molecular structures are confirmed and characterized. The resulting polymers have high thermal stabilities and broad absorption bands with low optical bandgaps. The hole and electron mobilities are calculated. PSC devices are fabricated utilizing the polymers as electron donors and PCBM as an electron acceptor. The PSC device with an active layer of P4:PCBM (1:1 by weight) exhibits the best power-conversion efficiency.

Original language	English
Pages (from-to)	1960-1970
Number of pages	11
Journal	Macromolecular Chemistry and Physics
Volume	212
Issue number	18
DOIs	https://doi.org/10.1002/macp.201100164
Publication status	Published - 15-09-2011

UN SDGs

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

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Physical and Theoretical Chemistry
Polymers and Plastics
Organic Chemistry
Materials Chemistry

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10.1002/macp.201100164

Cite this

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title = "Fine tuning of HOMO energy levels for low-band-gap photovoltaic copolymers containing cyclopentadithienopyrrole and bithiazole units",

abstract = "Five conjugated LBG polymers P1-P5 consisting of a DTP unit as an electron donor and various bithiazole units as electron acceptors are designed and synthesized for photovoltaic applications. The effects of the electron-deficient bithiazole derivatives on the thermal, optical, electrochemical, and photovoltaic properties are investigated. The molecular structures are confirmed and characterized. The resulting polymers have high thermal stabilities and broad absorption bands with low optical bandgaps. The hole and electron mobilities are calculated. PSC devices are fabricated utilizing the polymers as electron donors and PCBM as an electron acceptor. The PSC device with an active layer of P4:PCBM (1:1 by weight) exhibits the best power-conversion efficiency.",

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AU - Patra, Dhalnjaya

AU - Sahu, Duryodhan

AU - Padhy, Harihara

AU - Kekuda, Dhanjay

AU - Chu, Chih Wei

AU - Wei, Kung Hwa

AU - Lin, Hong Cheu

PY - 2011/9/15

Y1 - 2011/9/15

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AB - Five conjugated LBG polymers P1-P5 consisting of a DTP unit as an electron donor and various bithiazole units as electron acceptors are designed and synthesized for photovoltaic applications. The effects of the electron-deficient bithiazole derivatives on the thermal, optical, electrochemical, and photovoltaic properties are investigated. The molecular structures are confirmed and characterized. The resulting polymers have high thermal stabilities and broad absorption bands with low optical bandgaps. The hole and electron mobilities are calculated. PSC devices are fabricated utilizing the polymers as electron donors and PCBM as an electron acceptor. The PSC device with an active layer of P4:PCBM (1:1 by weight) exhibits the best power-conversion efficiency.

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Fine tuning of HOMO energy levels for low-band-gap photovoltaic copolymers containing cyclopentadithienopyrrole and bithiazole units

Abstract

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