Temperature dependence of the photoluminescence of MnS/ZnS core–shell quantum dots

doi:10.1088/1674-1056/23/12/127804

中国物理B ›› 2014, Vol. 23 ›› Issue (12): 127804-127804.doi: 10.1088/1674-1056/23/12/127804

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Temperature dependence of the photoluminescence of MnS/ZnS core–shell quantum dots

房岱峰^a, 丁星^b, 代如成^c, 赵智^a, 王中平^c, 张增明^c

a Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei 230026, China;
b Physics Department, Anhui University, Hefei 230601, China;
c Center of Physical Experiments, University of Science and Technology of China, Hefei 230026, China

收稿日期:2014-06-03 修回日期:2014-08-07 出版日期:2014-12-15 发布日期:2014-12-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11304300, 21002097, 11074232, and 11274288), the National Basic Research Program of China (Grant Nos. 2011CB932801 and 2012CB933702), the Fund from the Ministry of Education of China (Grant No. 20123402110034), the Fundamental Research Funds for the Central Universities (Grant No. WK2030420002), and the Anhui Provincial Natural Science Foundation, China (Grant No. 1308085QA06).

Temperature dependence of the photoluminescence of MnS/ZnS core–shell quantum dots

Fang Dai-Feng (房岱峰)^a, Ding Xing (丁星)^b, Dai Ru-Cheng (代如成)^c, Zhao Zhi (赵智)^a, Wang Zhong-Ping (王中平)^c, Zhang Zeng-Ming (张增明)^c

a Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei 230026, China;
b Physics Department, Anhui University, Hefei 230601, China;
c Center of Physical Experiments, University of Science and Technology of China, Hefei 230026, China

Received:2014-06-03 Revised:2014-08-07 Online:2014-12-15 Published:2014-12-15
Contact: Dai Ru-Cheng E-mail:dairc@ustc.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11304300, 21002097, 11074232, and 11274288), the National Basic Research Program of China (Grant Nos. 2011CB932801 and 2012CB933702), the Fund from the Ministry of Education of China (Grant No. 20123402110034), the Fundamental Research Funds for the Central Universities (Grant No. WK2030420002), and the Anhui Provincial Natural Science Foundation, China (Grant No. 1308085QA06).

摘要/Abstract

摘要：

The temperature dependence of the photoluminescence (PL) from MnS/ZnS core–shell quantum dots is investigated in a temperature range of 8 K–300 K. The orange emission from the ⁴T₁ → ⁶A₁ transition of Mn²⁺ ions and the blue emission related to the trapped surface state are observed in the MnS/ZnS core–shell quantum dots. As the temperature increases, the orange emission is shifted toward a shorter wavelength while the blue emission is shifted towards the longer wavelength. Both the orange and blue emissions reduce their intensities with the increase of temperature but the blue emission is quenched faster. The temperature-dependent luminescence intensities of the two emissions are well explained by the thermal quenching theory.

关键词: MnS/ZnS, quantum dots, temperature, photoluminescence

Abstract:

Key words: MnS/ZnS, quantum dots, temperature, photoluminescence

中图分类号: (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)

78.67.-n

78.55.Et (II-VI semiconductors) 78.67.Hc (Quantum dots)

房岱峰, 丁星, 代如成, 赵智, 王中平, 张增明. Temperature dependence of the photoluminescence of MnS/ZnS core–shell quantum dots[J]. 中国物理B, 2014, 23(12): 127804-127804.

Fang Dai-Feng (房岱峰), Ding Xing (丁星), Dai Ru-Cheng (代如成), Zhao Zhi (赵智), Wang Zhong-Ping (王中平), Zhang Zeng-Ming (张增明). Temperature dependence of the photoluminescence of MnS/ZnS core–shell quantum dots[J]. Chin. Phys. B, 2014, 23(12): 127804-127804.

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Temperature dependence of the photoluminescence of MnS/ZnS core–shell quantum dots

Temperature dependence of the photoluminescence of MnS/ZnS core–shell quantum dots

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