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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.12
- 수록면
- 589 - 594 (6page)
이용수
초록· 키워드
오류제보하기
We have investigated the dimensional nature of center-of-mass exciton confinement states in a CdMnTe/CdTe/CdMnTe heterostructure, where the CdTe well is too wide (144 nm) to confine both electrons and holes but able to confine whole excitons in the center-of-mass coordinate. Fine multiple photoluminescence spectra with a few meV separation were observed at 6 K. From the thickness dependence of the transition rate, they were attributed to even numbered center-of-mass exciton confinement states (N = 2, 4, 6, ⋯, 18). Dimensionality of the center-of-mass exciton confinement states was also investigated in terms of temperature dependence of radiative decay time. At low temperatures ( 12 K), we found that the ground state excitons are likely localized possibly due to the barrier interface fluctuation, resulting in a constant decay time (~350 ps). With increased temperature ( 12 K), localized excitons are thermally released, giving rise to a linear temperature dependence of radiative decay time as an evidence of two-dimensional nature.
목차
I. INTRODUCTION
II. METHODS
III. RESULTS AND DISCUSSION
IV. CONCLUSION
REFERENCES
참고문헌 (29)
참고문헌 신청
H. Mariette / 1991 / Optical investigation of CdTe/CdZnTe Heterostructures / Phys. Scripta T39:204~210
H. Tuffigo / 1990 / Strong effects of electron-hole Coulomb interaction on optical properties of CdTe quantum wells / Surf. Sci 229:480~483
Y. M. d’Aubigné / 1987 / Quantization of excitonic polaritons in CdTe-CdZnTe double heterostructures / J. Phys. Colloques 48:C5-363~C5-366
H. Tuffigo / 1990 / Optical properties of excitons in II-VI quantum wells: importance of centre-of-mass quantization / J. Cry. Grow 101:778~782
H. Tuffigo / 1988 / Luminescence from quantized excitonpolariton states in Cd1-xZnxTe/CdTe/Cd1-xZnxTe thin-layer heterostructures / Phys. Rev. B 37:4310~4313
H. Tuffigo / 1990 / Strong effects of electron-hole Coulomb interaction on optical properties of CdTe quantum wells / Surf. Sci 229:480~483
Y. M. d’Aubigné / 1987 / Quantization of excitonic polaritons in CdTe-CdZnTe double heterostructures / J. Phys. Colloques 48:C5-363~C5-366
H. Tuffigo / 1990 / Optical properties of excitons in II-VI quantum wells: importance of centre-of-mass quantization / J. Cry. Grow 101:778~782
H. Tuffigo / 1988 / Luminescence from quantized excitonpolariton states in Cd1-xZnxTe/CdTe/Cd1-xZnxTe thin-layer heterostructures / Phys. Rev. B 37:4310~4313
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