Alkali Metal Chalcogenides for Radiation Detection

机译：用于辐射检测的碱金属硫属元素化物

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We report on the optical and charge transport properties of novel alkali metal chalcogenides, Cs_2Hg_6S_7 and Cs_2Cd_3Te_4, pertaining to their use in radiation detection. Optical absorption, photoconductivity, and gamma ray response measurements for undoped crystals were measured. The band gap energies of the Cs_2Hg_6S_7 and Cs_2Cd_3Te_4 compounds are 1.63 eV and 2.45 eV, respectively. The mobility-lifetime products for charge carriers are of the order of ~10~(-3) cm~2/V for electrons and -10~(-4) cmVv for holes. Detectors fabricated from the ternary compound Cs_2Hg_6S_7 shows well-resolved spectroscopic features at room temperature in response to 7-rays at 122 keV from a ~(57)Co source, indicating its potential as a radiation detector.

机译：我们报告了新型碱金属硫族化物Cs_2Hg_6S_7和Cs_2Cd_3Te_4的光学和电荷传输性质，涉及它们在辐射检测中的用途。测量了未掺杂晶体的光吸收，光电导率和伽马射线响应测量值。 Cs_2Hg_6S_7和Cs_2Cd_3Te_4化合物的带隙能分别为1.63 eV和2.45 eV。电荷载流子的迁移率-寿命产物对于电子约为10〜（-3）cm〜2 / V，对于空穴而言约为-10〜（-4）cmVv。由三元化合物Cs_2Hg_6S_7制成的探测器在室温下响应于来自（（57）Co）的122 keV的7射线时，显示出良好分辨的光谱特征，表明其作为辐射探测器的潜力。

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《Nuclear radiation detection materials-2011》|2011年|p.133-138|共6页
会议地点 San Francisco CA(US);San Francisco CA(US)
作者
J. A. Peters; Zhifu Liu; B. W. Wessels; I. Androulakis; C. P. Sebastian; Hao Li; M. G. Kanatzidis;
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Materials Research Center, Northwestern University, Evanston, IL 60208;

Materials Research Center, Northwestern University, Evanston, IL 60208;

Materials Research Center, Northwestern University, Evanston, IL 60208,Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208;

Department of Chemistry, Northwestern University, Evanston, IL 60208;

Department of Chemistry, Northwestern University, Evanston, IL 60208;

Department of Chemistry, Northwestern University, Evanston, IL 60208;

Department of Chemistry, Northwestern University, Evanston, IL 60208;

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Alkali Metal Chalcogenides for Radiation Detection

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