Photoluminescence, absorption, and photocurrent measurements were made for a hybrid system of 1-thioglycerol-capped HgTe nanoparticles synthesized by colloidal method to investigate the photocurrent mechanism in this hybrid system. Absorption and photoluminescence spectra taken for the capped HgTe nanoparticles reveal strong exciton peaks in the near-infrared wavelength range. The wavelength dependence of the photocurrent for these capped nanoparticles is very close to that of the absorption spectrum. For the photocurrent mechanism of the hybrid system, on the basis of our experimental results and energy diagram for the 1-thioglycerol-capped HgTe nanoparticles, it is suggested in this letter that holes among electron-hole pairs created by incident photons in the HgTe nanoparticles are transferred to capping 1-thioglycerol while electrons are strongly confined in these nanoparticles and that the holes contribute to the photocurrent flowing in the medium of 1-thioglycerol.
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1 December 2003
Research Article|
December 01 2003
Photocurrent mechanism in a hybrid system of 1-thioglycerol-capped HgTe nanoparticles
Hyunsuk Kim;
Hyunsuk Kim
Department of Electrical Engineering, Korea University, Seoul 136-701, Korea
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Kyoungah Cho;
Kyoungah Cho
Department of Electrical Engineering, Korea University, Seoul 136-701, Korea
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Hyunwoo Song;
Hyunwoo Song
Department of Electrical Engineering, Korea University, Seoul 136-701, Korea
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Byungdon Min;
Byungdon Min
Department of Electrical Engineering, Korea University, Seoul 136-701, Korea
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Jong-Soo Lee;
Jong-Soo Lee
Department of Electrical Engineering, Korea University, Seoul 136-701, Korea
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Gyu-Tae Kim;
Gyu-Tae Kim
Department of Electrical Engineering, Korea University, Seoul 136-701, Korea
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Sangsig Kim;
Sangsig Kim
Department of Electrical Engineering, Korea University, Seoul 136-701, Korea
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Sung Hyun Kim;
Sung Hyun Kim
Department of Chemical and Biological Engineering, Korea University, Seoul 136-701, Korea
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Taeyong Noh
Taeyong Noh
Electronic Materials Laboratory, Samsung Advanced Institute of Technology, POB 111, Suwon 440-600, Korea
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Appl. Phys. Lett. 83, 4619–4621 (2003)
Article history
Received:
July 14 2003
Accepted:
October 06 2003
Citation
Hyunsuk Kim, Kyoungah Cho, Hyunwoo Song, Byungdon Min, Jong-Soo Lee, Gyu-Tae Kim, Sangsig Kim, Sung Hyun Kim, Taeyong Noh; Photocurrent mechanism in a hybrid system of 1-thioglycerol-capped HgTe nanoparticles. Appl. Phys. Lett. 1 December 2003; 83 (22): 4619–4621. https://doi.org/10.1063/1.1631052
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