All-small molecule solar cells based on donor molecule optimization with highly enhanced efficiency and stability

Jie Guo; Haijun Bin; Wei Wang; Bingcai Chen; Jing Guo; Rui Sun; Zhi Guo Zhang; Xuechen Jiao; Yongfang Li; Jie Min

doi:10.1039/c8ta02778a

All-small molecule solar cells based on donor molecule optimization with highly enhanced efficiency and stability

Jie Guo
, Haijun Bin
, Wei Wang
, Bingcai Chen
, Jing Guo
, Rui Sun
, Zhi Guo Zhang
, Xuechen Jiao
, Yongfang Li
, Jie Min

Materials Science & Engineering

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

56 Citations (Scopus)

Abstract

In this work, a novel oligomer based on the introduction of alkylthio-thienylenevinylene thiophene (TVT-SR) side groups into benzo[1,2-b:4,5-b′]dithiophene (BDT) as a central donor unit, BDT(TVT-SR)₂, is developed and used as the donor material for all-small molecule OSCs (SM-OSCs) with IDIC as the acceptor. BDT(TVT-SR)₂ exhibits red-shifted absorption, a down-shifted HOMO energy level and higher hole mobility in comparison with its corresponding molecule H11 with alkylthiothienyl side chains. The power conversion efficiency (PCE) of the SM-OSCs based on BDT(TVT-SR)₂:IDIC with thermal annealing (TA) at 110 °C for 10 min reached 11.1%. This TA treatment improves the film morphology, charge transport properties and thus device performance of the SM-OSCs. Besides, these devices show good morphological stability and photo-stability.

Original language	English
Pages (from-to)	15675-15683
Number of pages	9
Journal	Journal of Materials Chemistry A
Volume	6
Issue number	32
DOIs	https://doi.org/10.1039/c8ta02778a
Publication status	Published - 1 Jan 2018

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SDG 7 Affordable and Clean Energy

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10.1039/c8ta02778a

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title = "All-small molecule solar cells based on donor molecule optimization with highly enhanced efficiency and stability",

abstract = "In this work, a novel oligomer based on the introduction of alkylthio-thienylenevinylene thiophene (TVT-SR) side groups into benzo[1,2-b:4,5-b′]dithiophene (BDT) as a central donor unit, BDT(TVT-SR)2, is developed and used as the donor material for all-small molecule OSCs (SM-OSCs) with IDIC as the acceptor. BDT(TVT-SR)2 exhibits red-shifted absorption, a down-shifted HOMO energy level and higher hole mobility in comparison with its corresponding molecule H11 with alkylthiothienyl side chains. The power conversion efficiency (PCE) of the SM-OSCs based on BDT(TVT-SR)2:IDIC with thermal annealing (TA) at 110 °C for 10 min reached 11.1\%. This TA treatment improves the film morphology, charge transport properties and thus device performance of the SM-OSCs. Besides, these devices show good morphological stability and photo-stability.",

author = "Jie Guo and Haijun Bin and Wei Wang and Bingcai Chen and Jing Guo and Rui Sun and Zhang, \{Zhi Guo\} and Xuechen Jiao and Yongfang Li and Jie Min",

year = "2018",

month = jan,

day = "1",

doi = "10.1039/c8ta02778a",

language = "English",

volume = "6",

pages = "15675--15683",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

publisher = "The Royal Society of Chemistry",

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TY - JOUR

T1 - All-small molecule solar cells based on donor molecule optimization with highly enhanced efficiency and stability

AU - Guo, Jie

AU - Bin, Haijun

AU - Wang, Wei

AU - Chen, Bingcai

AU - Guo, Jing

AU - Sun, Rui

AU - Zhang, Zhi Guo

AU - Jiao, Xuechen

AU - Li, Yongfang

AU - Min, Jie

PY - 2018/1/1

Y1 - 2018/1/1

N2 - In this work, a novel oligomer based on the introduction of alkylthio-thienylenevinylene thiophene (TVT-SR) side groups into benzo[1,2-b:4,5-b′]dithiophene (BDT) as a central donor unit, BDT(TVT-SR)2, is developed and used as the donor material for all-small molecule OSCs (SM-OSCs) with IDIC as the acceptor. BDT(TVT-SR)2 exhibits red-shifted absorption, a down-shifted HOMO energy level and higher hole mobility in comparison with its corresponding molecule H11 with alkylthiothienyl side chains. The power conversion efficiency (PCE) of the SM-OSCs based on BDT(TVT-SR)2:IDIC with thermal annealing (TA) at 110 °C for 10 min reached 11.1%. This TA treatment improves the film morphology, charge transport properties and thus device performance of the SM-OSCs. Besides, these devices show good morphological stability and photo-stability.

AB - In this work, a novel oligomer based on the introduction of alkylthio-thienylenevinylene thiophene (TVT-SR) side groups into benzo[1,2-b:4,5-b′]dithiophene (BDT) as a central donor unit, BDT(TVT-SR)2, is developed and used as the donor material for all-small molecule OSCs (SM-OSCs) with IDIC as the acceptor. BDT(TVT-SR)2 exhibits red-shifted absorption, a down-shifted HOMO energy level and higher hole mobility in comparison with its corresponding molecule H11 with alkylthiothienyl side chains. The power conversion efficiency (PCE) of the SM-OSCs based on BDT(TVT-SR)2:IDIC with thermal annealing (TA) at 110 °C for 10 min reached 11.1%. This TA treatment improves the film morphology, charge transport properties and thus device performance of the SM-OSCs. Besides, these devices show good morphological stability and photo-stability.

UR - https://www.scopus.com/pages/publications/85051729877

U2 - 10.1039/c8ta02778a

DO - 10.1039/c8ta02778a

M3 - Article

AN - SCOPUS:85051729877

SN - 2050-7488

VL - 6

SP - 15675

EP - 15683

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 32

ER -

All-small molecule solar cells based on donor molecule optimization with highly enhanced efficiency and stability

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All-small molecule solar cells based on donor molecule optimization with highly enhanced efficiency and stability

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