Structure engineering of small molecules for organic solar cells

Huyen Tran; Muhammad Haris; Taek Ahn; Sang Kyu Lee

doi:10.1080/15421406.2020.1741821

Structure engineering of small molecules for organic solar cells

Huyen Tran
, Muhammad Haris
, Taek Ahn^*
, Sang Kyu Lee^*

^*Corresponding author for this work

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

4 Scopus citations

Abstract

Two 1,3-bis(thiophen-2-yl)−5,7-bis(2-ehtylhexyl)benzo-[1,2-c:4,5-c]-dithiophene-4,8-dione (BDD) based small molecules, SM1 and SM2 are designed and synthesized by incorporating benzodithiophene (BDT) central core, BDD dual accepting units and 3-ethyl rhodamine as endcap group with various number of BDT units. We systematically investigated the synthesis, optical and electrochemical properties, and photovoltaic characteristics of these donor materials. The number of BDT units have a significant influence on Jsc due to interconnected structure and results in a broader absorption on thin film. The inverted devices employed for both small molecules exhibited power conversion efficiencies of 0.41% for SM1 and 0.82% for SM2.

Original language	English
Pages (from-to)	35-40
Number of pages	6
Journal	Molecular Crystals and Liquid Crystals
Volume	705
Issue number	1
DOIs	https://doi.org/10.1080/15421406.2020.1741821
State	Published - 2 Jul 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Taylor & Francis Group, LLC.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

BDD-based small molecules
non-fullerene system
organic solar cells

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

Access to Document

10.1080/15421406.2020.1741821

Cite this

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title = "Structure engineering of small molecules for organic solar cells",

abstract = "Two 1,3-bis(thiophen-2-yl)−5,7-bis(2-ehtylhexyl)benzo-[1,2-c:4,5-c]-dithiophene-4,8-dione (BDD) based small molecules, SM1 and SM2 are designed and synthesized by incorporating benzodithiophene (BDT) central core, BDD dual accepting units and 3-ethyl rhodamine as endcap group with various number of BDT units. We systematically investigated the synthesis, optical and electrochemical properties, and photovoltaic characteristics of these donor materials. The number of BDT units have a significant influence on Jsc due to interconnected structure and results in a broader absorption on thin film. The inverted devices employed for both small molecules exhibited power conversion efficiencies of 0.41\% for SM1 and 0.82\% for SM2.",

keywords = "BDD-based small molecules, non-fullerene system, organic solar cells",

author = "Huyen Tran and Muhammad Haris and Taek Ahn and Lee, \{Sang Kyu\}",

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year = "2020",

month = jul,

day = "2",

doi = "10.1080/15421406.2020.1741821",

language = "English",

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journal = "Molecular Crystals and Liquid Crystals",

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TY - JOUR

T1 - Structure engineering of small molecules for organic solar cells

AU - Tran, Huyen

AU - Haris, Muhammad

AU - Ahn, Taek

AU - Lee, Sang Kyu

PY - 2020/7/2

Y1 - 2020/7/2

N2 - Two 1,3-bis(thiophen-2-yl)−5,7-bis(2-ehtylhexyl)benzo-[1,2-c:4,5-c]-dithiophene-4,8-dione (BDD) based small molecules, SM1 and SM2 are designed and synthesized by incorporating benzodithiophene (BDT) central core, BDD dual accepting units and 3-ethyl rhodamine as endcap group with various number of BDT units. We systematically investigated the synthesis, optical and electrochemical properties, and photovoltaic characteristics of these donor materials. The number of BDT units have a significant influence on Jsc due to interconnected structure and results in a broader absorption on thin film. The inverted devices employed for both small molecules exhibited power conversion efficiencies of 0.41% for SM1 and 0.82% for SM2.

AB - Two 1,3-bis(thiophen-2-yl)−5,7-bis(2-ehtylhexyl)benzo-[1,2-c:4,5-c]-dithiophene-4,8-dione (BDD) based small molecules, SM1 and SM2 are designed and synthesized by incorporating benzodithiophene (BDT) central core, BDD dual accepting units and 3-ethyl rhodamine as endcap group with various number of BDT units. We systematically investigated the synthesis, optical and electrochemical properties, and photovoltaic characteristics of these donor materials. The number of BDT units have a significant influence on Jsc due to interconnected structure and results in a broader absorption on thin film. The inverted devices employed for both small molecules exhibited power conversion efficiencies of 0.41% for SM1 and 0.82% for SM2.

KW - BDD-based small molecules

KW - non-fullerene system

KW - organic solar cells

UR - https://www.scopus.com/pages/publications/85091319247

U2 - 10.1080/15421406.2020.1741821

DO - 10.1080/15421406.2020.1741821

M3 - Article

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JF - Molecular Crystals and Liquid Crystals

IS - 1

ER -

Structure engineering of small molecules for organic solar cells

Abstract

Bibliographical note

UN SDGs

Keywords

ASJC Scopus subject areas

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