NDLI: Synthesis of organic semiconductor bearing B←N bridged thienylthiazole and diketopyrrolopyrrole for the applicaton of high open-circuit voltage organic photovoltaics

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Synthesis of organic semiconductor bearing B←N bridged thienylthiazole and diketopyrrolopyrrole for the applicaton of high open-circuit voltage organic photovoltaics

Content Provider	Semantic Scholar
Author	Ryu, Ka Yeon Sung, Dan-Bi Won, Suk-Young Ahn, Kyusang Kim, Hyun Yeong Arulkashmir, Arulraj Kwak, Kyungwon Lee, Chongmok Kim, Wŏn-Suk Kim, Kyungkon
Copyright Year	2018
Abstract	Abstract New small molecular semiconductors with small band gap and low-lying highest occupied molecular orbital (EHOMO), namely TBDPPOT, TBDPPEH, and TBDPPEHT4 were synthesized by incorporating the B←N bridged thienylthiazole and diketopyrrolopyrrole (DPP) derivatives. TBDPPOT and TBDPPEH were prepared, respectively, using two different DPPs having 1-octyl and 2-ethylhexyl moiety as the solubilizing group. In addition, the band gap of the TBDPPEH is further reduced by introducing planar thienothiophene unit, which was used for the preparation of TBDPPEHT4. These synthesized SMs are blended with fullerene derivative to construct a photo-active layer for organic photovoltaics. Among OPVs utilizing those SMs, the TBDPPEH exhibits highest power conversion efficiency of 3.21% with an exceptionally high VOC of 0.92 V, which is ascribed to low-lying HOMO energy level of −5.62 eV. It is expected that the utilization of TBDPPEH as a photo-active layer for OPVs would enhance the oxidation stability of the OPVs.
Starting Page	858
Ending Page	866
Page Count	9
File Format	PDF HTM / HTML
DOI	10.1016/j.dyepig.2017.11.060
Volume Number	149
Alternate Webpage(s)	https://pr.ibs.re.kr/bitstream/8788114/4156/1/Synthesis%20of%20organic%20semiconductor%20bearing_%EA%B3%BD%EA%B2%BD%EC%9B%90.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.dyepig.2017.11.060
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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