Enhanced luminescence and photocurrent of organic microrod/ZnO nanoparticle hybrid system: Nanoscale optical and electrical characteristics

Guru P. Neupane; Krishna P. Dhakal; EunHei H. Cho; Bong Gi Kim; Seongchu Lim; Jubok Lee; Changwon Seo; Young Bum Kim; Min Su Kim; Jinsang Kim; Jinsoo Joo; Jeongyong Kim

doi:10.1007/s13391-015-4496-0

Enhanced luminescence and photocurrent of organic microrod/ZnO nanoparticle hybrid system: Nanoscale optical and electrical characteristics

Guru P. Neupane, Krishna P. Dhakal, EunHei H. Cho, Bong Gi Kim, Seongchu Lim, Jubok Lee, Changwon Seo, Young Bum Kim, Min Su Kim, Jinsang Kim, Jinsoo Joo, Jeongyong Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We studied the enhanced photoluminescence (PL) and photocurrent (PC) of 1,4-bis(3,5-bis(trifluoromethyl)styryl)-2,5-dibromobenzene (TSDB) microrods decorated with ZnO nanoparticles (NPs). Chemically synthesized crystalline ZnO NPs with an average size of 40 nm were functionalized with (3-aminopropyl)trimethoxysilane to result in the chemical bonding of the NPs onto the surface of the TSDB microrods. We observed a 2-fold PL enhancement in the ZnO/TSDB hybrid microrods compared with the PL of the pure TSDB microrods. In addition, PC measurement carried out on the TSDB and ZnO/TSDB hybrid microrods at two different excitation wavelengths of 355 nm and 405 nm showed the significant enhancement of the PC from the hybrid system, where the resonant excitation of the laser (355 nm) corresponding to the absorption of both ZnO and TSDB caused ∼3 times enhancement of the PC from the ZnO/TSDB hybrid microrods. [Figure not available: see fulltext.][Figure not available: see fulltext.]

Original language	English
Pages (from-to)	741-748
Number of pages	8
Journal	Electronic Materials Letters
Volume	11
Issue number	5
DOIs	https://doi.org/10.1007/s13391-015-4496-0
Publication status	Published - 2015 Sep 25

Keywords

energy transfer
photocurrent
photoluminescence
TSDB
ZnO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

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Neupane, G. P., Dhakal, K. P., Cho, E. H., Kim, B. G., Lim, S., Lee, J., Seo, C., Kim, Y. B., Kim, M. S., Kim, J., Joo, J., & Kim, J. (2015). Enhanced luminescence and photocurrent of organic microrod/ZnO nanoparticle hybrid system: Nanoscale optical and electrical characteristics. Electronic Materials Letters, 11(5), 741-748. https://doi.org/10.1007/s13391-015-4496-0

Enhanced luminescence and photocurrent of organic microrod/ZnO nanoparticle hybrid system : Nanoscale optical and electrical characteristics. / Neupane, Guru P.; Dhakal, Krishna P.; Cho, EunHei H.; Kim, Bong Gi; Lim, Seongchu; Lee, Jubok; Seo, Changwon; Kim, Young Bum; Kim, Min Su; Kim, Jinsang; Joo, Jinsoo; Kim, Jeongyong.

In: Electronic Materials Letters, Vol. 11, No. 5, 25.09.2015, p. 741-748.

Research output: Contribution to journal › Article › peer-review

Neupane, Guru P. ; Dhakal, Krishna P. ; Cho, EunHei H. ; Kim, Bong Gi ; Lim, Seongchu ; Lee, Jubok ; Seo, Changwon ; Kim, Young Bum ; Kim, Min Su ; Kim, Jinsang ; Joo, Jinsoo ; Kim, Jeongyong. / Enhanced luminescence and photocurrent of organic microrod/ZnO nanoparticle hybrid system : Nanoscale optical and electrical characteristics. In: Electronic Materials Letters. 2015 ; Vol. 11, No. 5. pp. 741-748.

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abstract = "We studied the enhanced photoluminescence (PL) and photocurrent (PC) of 1,4-bis(3,5-bis(trifluoromethyl)styryl)-2,5-dibromobenzene (TSDB) microrods decorated with ZnO nanoparticles (NPs). Chemically synthesized crystalline ZnO NPs with an average size of 40 nm were functionalized with (3-aminopropyl)trimethoxysilane to result in the chemical bonding of the NPs onto the surface of the TSDB microrods. We observed a 2-fold PL enhancement in the ZnO/TSDB hybrid microrods compared with the PL of the pure TSDB microrods. In addition, PC measurement carried out on the TSDB and ZnO/TSDB hybrid microrods at two different excitation wavelengths of 355 nm and 405 nm showed the significant enhancement of the PC from the hybrid system, where the resonant excitation of the laser (355 nm) corresponding to the absorption of both ZnO and TSDB caused ∼3 times enhancement of the PC from the ZnO/TSDB hybrid microrods. [Figure not available: see fulltext.][Figure not available: see fulltext.]",

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AU - Dhakal, Krishna P.

AU - Cho, EunHei H.

AU - Kim, Bong Gi

AU - Lim, Seongchu

AU - Lee, Jubok

AU - Seo, Changwon

AU - Kim, Young Bum

AU - Kim, Min Su

AU - Kim, Jinsang

AU - Joo, Jinsoo

AU - Kim, Jeongyong

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AB - We studied the enhanced photoluminescence (PL) and photocurrent (PC) of 1,4-bis(3,5-bis(trifluoromethyl)styryl)-2,5-dibromobenzene (TSDB) microrods decorated with ZnO nanoparticles (NPs). Chemically synthesized crystalline ZnO NPs with an average size of 40 nm were functionalized with (3-aminopropyl)trimethoxysilane to result in the chemical bonding of the NPs onto the surface of the TSDB microrods. We observed a 2-fold PL enhancement in the ZnO/TSDB hybrid microrods compared with the PL of the pure TSDB microrods. In addition, PC measurement carried out on the TSDB and ZnO/TSDB hybrid microrods at two different excitation wavelengths of 355 nm and 405 nm showed the significant enhancement of the PC from the hybrid system, where the resonant excitation of the laser (355 nm) corresponding to the absorption of both ZnO and TSDB caused ∼3 times enhancement of the PC from the ZnO/TSDB hybrid microrods. [Figure not available: see fulltext.][Figure not available: see fulltext.]

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