A new V-shaped triphenylamine/diketopyrrolopyrrole containing donor material for small molecule organic solar cells

Shifan Wang; Jie Yang; Zhiguo Zhang; Yuanyuan Hu; Xudong Cao; Hai Li; Youtian Tao; Yongfang Li; Wei Huang

doi:10.1039/c5ra07383a

A new V-shaped triphenylamine/diketopyrrolopyrrole containing donor material for small molecule organic solar cells

Shifan Wang, Jie Yang, Zhiguo Zhang, Yuanyuan Hu, Xudong Cao, Hai Li, Youtian Tao, Yongfang Li, Wei Huang

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

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

15 Scopus citations

Abstract

A new V-shaped small molecule, TPA(DPPT2)2 is designed and synthesized with triphenylamine (TPA) as the core, diketopyrrolopyrrole (DPP) as the arm and bithiophene as end-groups. The compound shows broad absorption, a low optical band gap of 1.61 eV and hole mobility of 1.99 × 10^-4 cm² V^-1 s^-1. By blending with a [6,6]-phenyl-C₇₁-butyric acid methylester (PC₇₁BM) acceptor, an optimized power conversion efficiency (PCE) of 3.81% is achieved. The best efficiency was obtained via adding remarkably small percentages of solvent additives (0.1% v/v of 1,8-diiodooctane, DIO) to form well-defined structures and improved phase-separated film morphology in the bulk-heterojunction layer.

Original language	English
Pages (from-to)	68192-68199
Number of pages	8
Journal	RSC Advances
Volume	5
Issue number	83
DOIs	https://doi.org/10.1039/c5ra07383a
State	Published - 30 Jul 2015

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title = "A new V-shaped triphenylamine/diketopyrrolopyrrole containing donor material for small molecule organic solar cells",

abstract = "A new V-shaped small molecule, TPA(DPPT2)2 is designed and synthesized with triphenylamine (TPA) as the core, diketopyrrolopyrrole (DPP) as the arm and bithiophene as end-groups. The compound shows broad absorption, a low optical band gap of 1.61 eV and hole mobility of 1.99 × 10-4 cm2 V-1 s-1. By blending with a [6,6]-phenyl-C71-butyric acid methylester (PC71BM) acceptor, an optimized power conversion efficiency (PCE) of 3.81% is achieved. The best efficiency was obtained via adding remarkably small percentages of solvent additives (0.1% v/v of 1,8-diiodooctane, DIO) to form well-defined structures and improved phase-separated film morphology in the bulk-heterojunction layer.",

author = "Shifan Wang and Jie Yang and Zhiguo Zhang and Yuanyuan Hu and Xudong Cao and Hai Li and Youtian Tao and Yongfang Li and Wei Huang",

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T1 - A new V-shaped triphenylamine/diketopyrrolopyrrole containing donor material for small molecule organic solar cells

AU - Wang, Shifan

AU - Yang, Jie

AU - Zhang, Zhiguo

AU - Hu, Yuanyuan

AU - Cao, Xudong

AU - Li, Hai

AU - Tao, Youtian

AU - Li, Yongfang

AU - Huang, Wei

PY - 2015/7/30

Y1 - 2015/7/30

N2 - A new V-shaped small molecule, TPA(DPPT2)2 is designed and synthesized with triphenylamine (TPA) as the core, diketopyrrolopyrrole (DPP) as the arm and bithiophene as end-groups. The compound shows broad absorption, a low optical band gap of 1.61 eV and hole mobility of 1.99 × 10-4 cm2 V-1 s-1. By blending with a [6,6]-phenyl-C71-butyric acid methylester (PC71BM) acceptor, an optimized power conversion efficiency (PCE) of 3.81% is achieved. The best efficiency was obtained via adding remarkably small percentages of solvent additives (0.1% v/v of 1,8-diiodooctane, DIO) to form well-defined structures and improved phase-separated film morphology in the bulk-heterojunction layer.

AB - A new V-shaped small molecule, TPA(DPPT2)2 is designed and synthesized with triphenylamine (TPA) as the core, diketopyrrolopyrrole (DPP) as the arm and bithiophene as end-groups. The compound shows broad absorption, a low optical band gap of 1.61 eV and hole mobility of 1.99 × 10-4 cm2 V-1 s-1. By blending with a [6,6]-phenyl-C71-butyric acid methylester (PC71BM) acceptor, an optimized power conversion efficiency (PCE) of 3.81% is achieved. The best efficiency was obtained via adding remarkably small percentages of solvent additives (0.1% v/v of 1,8-diiodooctane, DIO) to form well-defined structures and improved phase-separated film morphology in the bulk-heterojunction layer.

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JO - RSC Advances

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ER -

A new V-shaped triphenylamine/diketopyrrolopyrrole containing donor material for small molecule organic solar cells

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