Quantum dots enhanced UV response of silicon photodetectors for broadband light detection (Conference Presentation)

2018 ◽  
Author(s):  
Haizheng Zhong ◽  
Mengjiao Zhang ◽  
Lingxue Wang ◽  
Linghai Meng ◽  
Xian-gang Wu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Light Detection ◽  
Uv Response

Perovskite Quantum Dots Embedded Composite Films Enhancing UV Response of Silicon Photodetectors for Broadband and Solar-Blind Light Detection

2018 ◽  
Vol 6 (16) ◽  
pp. 1800077 ◽  
Author(s):  
Mengjiao Zhang ◽  
Lingxue Wang ◽  
Linghai Meng ◽  
Xian-Gang Wu ◽  
Qinwen Tan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Composite Films ◽  
Light Detection ◽  
Solar Blind ◽  
Perovskite Quantum Dots ◽  
Uv Response

WS2 quantum dots-MnO2 nanosheet system for use in ratiometric fluorometric/scattered light detection of glutathione

2020 ◽  
Vol 187 (6) ◽  
Author(s):  
Fanyong Yan ◽  
Zhonghui Sun ◽  
Jinxia Xu ◽  
Hejing Li ◽  
Yuyang Zhang
Keyword(s):  
Quantum Dots ◽  
Scattered Light ◽  
Light Detection ◽  
Mno2 Nanosheet

Nanostructure of semiconductor quantum dots in a borosilicate glass matrix by complementary use of HREM and AEM

1990 ◽  
Vol 48 (4) ◽  
pp. 728-729
Author(s):  
M.J. Kim ◽  
L.C. Liu ◽  
S.H. Risbud ◽  
R.W. Carpenter
Keyword(s):  
Quantum Dots ◽  
Borosilicate Glass ◽  
Glass Matrix ◽  
Optical Switching ◽  
Response Times ◽  
Fast Response ◽  
Processing Technique ◽  
Internal Stresses ◽  
Electron Hole ◽  
Spatial Dimensions

When the size of a semiconductor is reduced by an appropriate materials processing technique to a dimension less than about twice the radius of an exciton in the bulk crystal, the band like structure of the semiconductor gives way to discrete molecular orbital electronic states. Clusters of semiconductors in a size regime lower than 2R {where R is the exciton Bohr radius; e.g. 3 nm for CdS and 7.3 nm for CdTe) are called Quantum Dots (QD) because they confine optically excited electron- hole pairs (excitons) in all three spatial dimensions. Structures based on QD are of great interest because of fast response times and non-linearity in optical switching applications.In this paper we report the first HREM analysis of the size and structure of CdTe and CdS QD formed by precipitation from a modified borosilicate glass matrix. The glass melts were quenched by pouring on brass plates, and then annealed to relieve internal stresses. QD precipitate particles were formed during subsequent "striking" heat treatments above the glass crystallization temperature, which was determined by differential thermal analysis.

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