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Author

Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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Bulk heterojunction materials composed of poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene): Ultrafast electron transfer and carrier recombination

Cited 32 times inthomson ciCited 29 times inthomson ci
Title
Bulk heterojunction materials composed of poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene): Ultrafast electron transfer and carrier recombination
Author
Hwang, In-WookKim, Jin YoungCho, ShinukYuen, JonathanCoates, NelsonLee, KwangheeHeeney, MartinMcCulloch, IainMoses, DanielHeeger, A. J.
Keywords
Bulk heterojunction; Carrier recombination; Fullerene derivatives; Liquid-crystalline polymers; Time-resolved spectroscopic studies; Ultrafast electron transfer
Issue Date
200805
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, v.112, no.21, pp.7853 - 7857
Abstract
The results of time-resolved spectroscopic studies of the structurally ordered liquid-crystalline polymer, poly(2,5bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene), PBTTT, and of composites of PBTTT with the soluble fullerene derivative, [6,6]-phenyl-C(61) butyric acid methyl ester, PCBM are reported. These ultrafast studies focus on the photogeneration of mobile carriers in PBTTT/PCBM composites following sub-picosecond electron transfer from PBTTT to PCBM. The recombination and loss of mobile carriers at early times (approximately 200 ps following photoexcitation) were measured with different ratios of the PBTTT and PCBM components (1: 1 and 1:3) by monitoring the time decay of the photoinduced absorption features associated with the charge-transferred state. The results are well-correlated with the solar-cell efficiency obtained using PBTTT/PCBM bulk heterojunction materials.
URI
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DOI
http://dx.doi.org/10.1021/jp711404c
ISSN
1932-7447
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