Suppressing charge recombination by incorporating 3,6-carbazole into poly[9-(heptadecan-9-yl)-9H-carbazole-2,7-diyl-alt-(5,6-bis-(octyloxy)-4,7-di(thiophen-2-yl)benzo[1,2,5]-thiadiazole)-5,5-diyl]
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SCOPUS
- Title
- Suppressing charge recombination by incorporating 3,6-carbazole into poly[9-(heptadecan-9-yl)-9H-carbazole-2,7-diyl-alt-(5,6-bis-(octyloxy)-4,7-di(thiophen-2-yl)benzo[1,2,5]-thiadiazole)-5,5-diyl]
- Authors
- Gang-Young Lee; Byung-Joon Moon; Seulki Song; Won Ho Lee; Han Young Woo; Park, T
- Date Issued
- 2014-07-15
- Publisher
- WILEY
- Abstract
- A series of poly[9-(heptadecan-9-yl)-9H-carbazole-2,7-diyl-alt-(5,6-bis-(octyloxy)-4,7-di(thiophen-2-yl)benzo-[1,2,5]-thia-diazole)-5,5-diyl] compositions containing various ratios of 3,6-carbazole was synthesized for testing in a polymer solar cell. An appropriate amount of 3,6-carbazole units incorporated into the copolymer improved intermolecular charge transport, whereas excess amount of 3,6-carbazole units temporarily seized on the partial negative charge generated in the conjugation breaks. We extensively studied the effects of the incorporated 3,6-carbazole units on the intermolecular interactions, which can affect nongeminated recombination in bulk heterojunction-polymer solar cells. These properties were investigated using photocurrent- and light intensity-dependent measurements and electrochemical impedance spectroscopy. (c) 2014 Wiley Periodicals, Inc.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14278
- DOI
- 10.1002/POLA.27214
- ISSN
- 0887-624X
- Article Type
- Article
- Citation
- JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, vol. 52, no. 14, page. 2047 - 2056, 2014-07-15
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