Bandgap engineering of Cd1-xZnxTe1-ySey(0 < x <0.27, 0 < y < 0.026)

被引：14

作者：

Park, Beomjun ^{[1
,2
]}

Kim, Yonghoon ^{[1
,2
]}

Seo, Jiwon ^{[1
,2
]}

Byun, Jangwon ^{[1
,2
]}

Dedic, V. ^{[3
]}

Franc, J. ^{[3
]}

Bolotnikov, A. E. ^{[4
]}

James, Ralph B. ^{[5
]}

Kim, Kihyun ^{[6
]}

机构：

[1] Korea Univ, Dept Hlth & Safety Convergence Sci, Seoul 02841, South Korea

[2] Korea Univ, Interdisciplinary Program Precis Publ Hlth, Seoul 02841, South Korea

[3] Charles Univ Prague, Inst Phys, Ke Karlovu 5, Prague 12116, Czech Republic

[4] Brookhaven Natl Lab, Upton, NY 11973 USA

[5] Savannah River Natl Lab, Aiken, SC 29808 USA

[6] Korea Univ, Sch Hlth & Environm Sci, Seoul 02841, South Korea

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2022年 / 1036卷

基金：

新加坡国家研究基金会;

关键词：

Bandgap engineering; CdZnTeSe; Pulse height spectra; Energy resolution enhancement; Defects; CDTE; RAY; CD1-XZN(X)TE; GROWTH; ENERGY; CDZNTE; GAP;

D O I：

10.1016/j.nima.2022.166836

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

CdZnTe (CZT) detectors with more than 10% zinc content did not show any remarkable improvement in the detector performance due to the additional defects introduced by the higher zinc content. However, recent research showed that the formation of defects was suppressed effectively by adding a small amount of selenium (at. 2%) in CZT. On this basis, we attempted to enhance the detector performance through the bandgap engineering by increasing the zinc content up to 25%, while adding 2% of selenium. Multiple CdZnTeSe (CZTS) ingots with Zn = 10, 12.5, 15, and 20%, while keeping the Se contents at 2%, were grown by the Bridgman method. The bandgap of CZTS for the different Zn and Se contents was analyzed and then introduced modified equation for predicting more accurately the bandgap of other alloy compositions. Also, the crystallinity of CZTS was evaluated by photoluminescence measurements. The pulse height spectra for Am-241 and Co-57 sources were used to evaluate the detector performance for the CZTS samples.

引用

页数：5

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Bandgap engineering of Cd1-xZnxTe1-ySey(0 &lt; x &lt;0.27, 0 &lt; y &lt; 0.026)

Bandgap engineering of Cd1-xZnxTe1-ySey(0 < x <0.27, 0 < y < 0.026)