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Volumn 111, Issue 16, 2007, Pages 5904-5908

Terahertz electric polarizability of excitons in PbSe and CdSe quantum dots

Author keywords

[No Author keywords available]

Indexed keywords

EXCITON BOHR RADIUS; EXCITON POLARIZABILITY; PHOTOGENERATED EXCITONS; TERAHERTZ ELECTRIC POLARIZABILITY;

EID: 34248390199     PISSN: 19327447     EISSN: 19327455     Source Type: Journal    
DOI: 10.1021/jp069026o     Document Type: Article
Times cited : (29)

References (34)
  • 1
    • 34248390199 scopus 로고    scopus 로고
    • 5904-5908 Terahertz Electric Polarizability of Excitons in PbSe and CdSe Quantum Dots Georgi L. Dakovski, Song Lan, Chen Xia and Jie Shan Department of Physics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106 jie.shan@case.edu Brion Technologies, Inc, Santa Clara, CA 10.1021/jp069026o Terahertz time-domain spectroscopy was employed to investigate photogenerated excitons in PbSe and CdSe quantum dots (QD) of radii less than their exciton Bohr radius. The exciton response was found to be atom-like and rise with increasing the carrier effective mass. Excitons in CdSe were found to be about two times more polarizable than those in PbSe QDs of equal size. These experimental findings including both the magnitude of the exciton polarizability and its variation with the QD radius were well described by an effective mass model with multiband structures of the QD materials. © 2007 American Chemical Society
    • 5904-5908 Terahertz Electric Polarizability of Excitons in PbSe and CdSe Quantum Dots Georgi L. Dakovski, Song Lan, Chen Xia and Jie Shan Department of Physics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106 jie.shan@case.edu Brion Technologies, Inc., Santa Clara, CA 10.1021/jp069026o Terahertz time-domain spectroscopy was employed to investigate photogenerated excitons in PbSe and CdSe quantum dots (QD) of radii less than their exciton Bohr radius. The exciton response was found to be "atom"-like and rise with increasing the carrier effective mass. Excitons in CdSe were found to be about two times more polarizable than those in PbSe QDs of equal size. These experimental findings including both the magnitude of the exciton polarizability and its variation with the QD radius were well described by an effective mass model with multiband structures of the QD materials. © 2007 American Chemical Society
  • 2
    • 34248384328 scopus 로고    scopus 로고
    • Klimov, V. I. e. Semiconductor and Metal Nanocrystals: Synthesis and Electronic and Optical Properties; Marcel Dekker: New York, 2004.
    • Klimov, V. I. e. Semiconductor and Metal Nanocrystals: Synthesis and Electronic and Optical Properties; Marcel Dekker: New York, 2004.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.