具有优异灵敏度和超低检测限的无铅钙钛矿3D/2DCs2AgBiBr6/Cs3Bi2Br9单晶异质结X射线探测器（英文）<iclass="icon-zqcb">

被引：0

作者：

刘宏杰 ^{[1
]}

孙雪 ^{[1
]}

刘嘉欣 ^{[1
]}

李想 ^{[1
]}

华云秋 ^{[1
]}

岳中杰 ^{[1
]}

宋剑 ^{[1
]}

王禧龙 ^{[1
]}

杨玉洁 ^{[2
]}

林乾乾 ^{[2
]}

翟仲军 ^{[1
]}

陶绪堂 ^{[1
]}

张国栋 ^{[1
]}

机构：

[1] State Key Laboratory of Crystal Materials, Institute of Crystal Materials, Shandong University

[2] Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan

来源：

Science China(Materials) | 2025年 / 68卷 / 02期

关键词：

D O I：

暂无

中图分类号：

TL816.1 []; TB34 [功能材料];

学科分类号：

080501 ;

摘要：

卤化铅钙钛矿单晶异质结以其独特的高灵敏度、高分辨率、高稳定性和低检出限的特点,在X射线探测中受到了广泛关注.然而,这些钙钛矿异质结中Pb的毒性限制了它们的实际应用.本文采用降温结晶法构建了第一个面积为20×20 mm2的全无机无铅Cs2AgBiBr6/Cs3Bi2Br9单晶异质结.3D Cs2AgBiBr6单晶薄膜在2D Cs3Bi2Br9单晶衬底上的外延结晶需要更大的驱动力,我们通过大的冷却速率使其生长模式从Volmer-Weber过渡到逐层生长.Cs2AgBiBr6/Cs3Bi2Br9单晶异质结探测器在100 keV硬X射线探测下,室温下灵敏度高达1390μC Gyair-1cm-2,75℃下增加到2075μC Gyair-1cm-2,且高温稳定性优异.此外,该探测器具有37.48 nGyairs-1的低检测限和长达90天的优异稳定性.

引用

页码：561 / 570

页数：10

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具有优异灵敏度和超低检测限的无铅钙钛矿3D/2DCs2AgBiBr6/Cs3Bi2Br9单晶异质结X射线探测器（英文）<iclass="icon-zqcb"></i>