scholarly journals Photodetector Based on CsPbBr3/Cs4PbBr6 Composite Nanocrystals with High Detectivity

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1287
Author(s):  
Yue Han ◽  
Rong Wen ◽  
Feng Zhang ◽  
Linlin Shi ◽  
Wenyan Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Dynamic Range ◽  
Underlying Mechanism ◽  
Dual Phase ◽  
Linear Dynamic Range ◽  
Inorganic Perovskite ◽  
Perovskite Nanocrystals ◽  
Linear Dynamic ◽  
532 Nm

High-quality, all-inorganic CsPbBr3/Cs4PbBr6 composite perovskite nanocrystals (NCs) were obtained with all-solution-processing at room temperature, and a photodetector (PD) with high detectivity was realized based on CsPbBr3/Cs4PbBr6 NCs. The detectivity (D*) of the proposed PD is 4.24 × 1012 Jones under 532 nm illumination, which is among the highest levels for PDs based on all-inorganic perovskite NCs. In addition, a high linear dynamic range (LDR) of 115 dB under 1 V bias was also realized. Furthermore, the underlying mechanism for the enhanced performance of the proposed PD was discussed. Our work might promote the preparation of high-performance PDs based on dual-phase all-inorganic perovskite nanocrystals.

All‐Inorganic Perovskite Photodetectors with Ultrabroad Linear Dynamic Range for Weak‐Light Imaging Applications

2020 ◽  
Vol 8 (23) ◽  
pp. 2001436 ◽  
Author(s):  
Zhong Ji ◽  
Guobiao Cen ◽  
Chunhua Su ◽  
Yujin Liu ◽  
Zhijuan Zhao ◽  
...  
Keyword(s):  
Dynamic Range ◽  
Linear Dynamic Range ◽  
Inorganic Perovskite ◽  
Linear Dynamic ◽  
Weak Light

Ultrathin Single‐Crystalline 2D Perovskite Photoconductor for High‐Performance Narrowband and Wide Linear Dynamic Range Photodetection

Small ◽  
2020 ◽  
Vol 16 (52) ◽  
pp. 2005626
Author(s):  
Yudi Tu ◽  
Yan Xu ◽  
Junzi Li ◽  
Qiaoyan Hao ◽  
Xiaosong Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Dynamic Range ◽  
Linear Dynamic Range ◽  
Single Crystalline ◽  
Linear Dynamic ◽  
Wide Linear Dynamic Range

New developments in analysis of isoenzymes separated by "high-performance" liquid chromatography.

1979 ◽  
Vol 25 (9) ◽  
pp. 1600-1607 ◽  
Author(s):  
T D Schlabach ◽  
J A Fulton ◽  
P B Mockridge ◽  
E C Toren
Keyword(s):  
High Performance Liquid Chromatography ◽  
Enzyme Activity ◽  
Liquid Chromatography ◽  
Lactate Dehydrogenase ◽  
High Performance ◽  
Dynamic Range ◽  
The Other ◽  
Linear Dynamic Range ◽  
Fluorescence Detector ◽  
Linear Dynamic

Abstract We have developed two enzyme analyzers for use in "high-performance" liquid chromatography. In both systems two detectors are used, placed after the column effluent has been combined with assay reagent. In one system, an absorbance detector is placed before and after a post-column reaction coil. Peaks observed at one detector are subtracted from those at the other, to produce a two-point measurement of enzyme activity. The linear dynamic range was 17--1700 U/L for lactate dehydrogenase (EC 1.1.1.27). In the other system, two reaction coils were used and a single fluorescence detector was placed at the end of each coil. These coils were kept at different temperatures, and an automated switching valve diverted equal amounts of column effluent and reagent into both coils. The fluorescence readings were then subtracted to produce a differential measurement of enzyme activity. The linear dynamic range was 20--1000 U/L. We used both systems to chromatographically analyze lactate dehydrogenase isoenzymes, and could separately determine both the distribution and activity of sample isoenzymes.

High Performance Optoelectronic Devices Based on Bright Perovskite Nanocrystals Synthesized at Room Temperature

2018 ◽  
Author(s):  
Sotirios Christodoulou ◽  
Francesco Di Stasio ◽  
Santanu Pradhan ◽  
Inigo Ramiro ◽  
Yu Bi ◽  
...  
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Optoelectronic Devices ◽  
Perovskite Nanocrystals

Convenient Fiber-Optic-Based Sample Cell for Shpol'skii and Low-Temperature Phosphorescence Spectrometry

1989 ◽  
Vol 43 (3) ◽  
pp. 422-425 ◽  
Author(s):  
Richard T. Madison ◽  
Mary K. Carroll ◽  
Gary M. Hieftje
Keyword(s):  
Low Temperature ◽  
Fiber Optic ◽  
Dynamic Range ◽  
Detection Limits ◽  
Linear Dynamic Range ◽  
Sample Cell ◽  
Linear Dynamic ◽  
Light Guides

A sample cell for observing the Shpol'skii effect at 77 K is described and analytically assessed. The cell employs fiber-optic light guides to transport excitation and emission radiation. The system is compact, inexpensive, and simple to construct from commercially available laboratory components, and it alleviates several problems inherent in conventional refrigerated-cell designs. Detection limits for anthracene, coronene, and pyrene obtained with the sample cell are 8.8 × 10−8 M, 8.4 × 10−7 M, and 3.5 × 10−7 M, respectively. The linear dynamic range for each compound is 2 to 3 orders of magnitude.

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