NDLI: <b>DTBDT-TTPD</b>: a new dithienobenzodithiophene-based small molecule for use in efficient photovoltaic devices

Content Provider	Royal Society of Chemistry (RSC)
Author	Kim, Yu Jin Back, Jang Yeol An, Tae kyu Park, Chan Eon Cheon, Ye Rim Kim, Yun-Hi
Copyright Year	2014
Abstract	We designed and synthesized a dithienobenzodithiophene (DTBDT)-based molecule with a planar molecular geometry, DTBDT-TTPD, for the fabrication of solution-processable organic solar cells (OSCs). DTBDT-TTPD exhibited both a low optical band gap of 1.88 eV and a low-lying highest occupied molecular orbital (HOMO) energy level of −5.61 eV, indicating that DTBDT-TTPD is a promising electron donor for use in OSCs. OSCs prepared with DTBDT-TTPD as the electron donor and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as the electron acceptor were fabricated. An optimized power conversion efficiency of 4.98% with a high short circuit current of 10.6 mA cm−2 was achieved after finely tuning the morphology through an annealing step. These results indicate that DTBDT-TTPD is an effective compound for producing very promising characteristics in small-molecule solar cell devices.
Starting Page	16443
Ending Page	16451
Page Count	9
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	2
Issue Number	39
Journal	Journal of Materials Chemistry A
DOI	10.1039/c4ta03745f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Molecular geometry Band gap Electronvolt Molecular orbital Electron donor Carboxylic acid Ester Electron acceptor Short circuit Nucleic acid thermodynamics Solar cell
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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