Imperial College London

DrHyojungCha

Faculty of Natural SciencesDepartment of Chemistry

Research Associate
 
 
 
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Contact

 

h.cha

 
 
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Location

 

G22Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ma:2014:10.1002/pola.27119,
author = {Ma, JY and Yun, HJ and Kim, SO and Lee, GB and Cha, H and Park, CE and Kwon, SK and Kim, YH},
doi = {10.1002/pola.27119},
journal = {Journal of Polymer Science, Part A: Polymer Chemistry},
pages = {1306--1314},
title = {Novel alkoxyanthracene donor and benzothiadiazole acceptor for organic thin film transistor and bulk heterojunction organic photovoltaic cells},
url = {http://dx.doi.org/10.1002/pola.27119},
volume = {52},
year = {2014}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Novel alkoxy anthracene (ODA)-based polymeric semiconductors were designed for polymer solar cell applications. Alkoxyanthracene, which contains many π electrons and electron donating group, was easily synthesized. The copolymers, poly(alkoxy anthracene-alt-thiophene benzothiadiazole thiophene) poly(ODA-TBT) and poly(alkoxy anthracene-alt-benzothiadiazole) poly(ODA-BT), have been obtained by Suzuki coupling polymerization. Both polymers have ODA unit as a donor and benzothiadiazole as an acceptor. ODA-TBT has thiophene linkages between ODA and benzothiadiazole. The optical, thermal, and electrochemical properties have been investigated by UV-visible absorption, thermal gravimetric analysis, differential scanning calorimetry, and CV. Organic thin-film transistor using polymers showed that the hole mobility of poly(ODA-alt-TBT) was around 3.6 × 10-3 cm2/Vs with on/off ratio of 9.91 × 105 while that of poly(ODA-alt-BT) was around 1.21 × 10-2 cm2/Vs with on/off ratio of 2.64 × 10 6. Organic photovoltaic performance based on polymers were evaluated with a configuration of ITO/PEDOT:PSS/active layer/LiF/Al. Poly(ODA-TBT) exhibits a short circuit current (Jsc) of 3.9 mA/cm2 and power conversion efficiency (PCE) of 1.4%, and poly(ODA-BT) exhibits the J sc of 6.4 mA/cm2 and PCE of 2.2%. The better device performance of poly(ODA-BT) is attributed to its charge transfer ability and enhanced mobility and crystallinity although poly(ODA-BT) does not have extended π-conjugation due to twisted structure compared with poly(ODA-TBT). © 2014 Wiley Periodicals, Inc.
AU - Ma,JY
AU - Yun,HJ
AU - Kim,SO
AU - Lee,GB
AU - Cha,H
AU - Park,CE
AU - Kwon,SK
AU - Kim,YH
DO - 10.1002/pola.27119
EP - 1314
PY - 2014///
SN - 0887-624X
SP - 1306
TI - Novel alkoxyanthracene donor and benzothiadiazole acceptor for organic thin film transistor and bulk heterojunction organic photovoltaic cells
T2 - Journal of Polymer Science, Part A: Polymer Chemistry
UR - http://dx.doi.org/10.1002/pola.27119
VL - 52
ER -