Effect of de-trapping on carrier transport process in semi-insulating CdZnTe
The effect of de-trapping on the carrier transport process in the CdZ'nTe detector is studied by laser beam-induced transient current (LBIC) measurement. Trapping time, de-trapping time, and mobility for electrons are determined directly from transient waveforms under various bias voltages. The resu...
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Veröffentlicht in: | Chinese physics B 2015-06, Vol.24 (6), p.511-515 |
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creator | 郭榕榕 介万奇 查钢强 徐亚东 冯涛 王涛 杜卓同 |
description | The effect of de-trapping on the carrier transport process in the CdZ'nTe detector is studied by laser beam-induced transient current (LBIC) measurement. Trapping time, de-trapping time, and mobility for electrons are determined directly from transient waveforms under various bias voltages. The results suggest that an electric field strengthens the capture and emission effects in trap center, which is associated with field-assisted capture and the Poole-Frenkel effect, respectively. The electron mobility is calculated to be 950 cm2/V-s and the corresponding electron mobility-lifetime product is found to be 1.32 × 10-3 cm2/V by a modified Hecht equation with considering the surface recombination effect. It is concluded that the trapping time and de-trapping time obtained from LBIC measurement provide direct information concerning the transport process. |
doi_str_mv | 10.1088/1674-1056/24/6/067203 |
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Trapping time, de-trapping time, and mobility for electrons are determined directly from transient waveforms under various bias voltages. The results suggest that an electric field strengthens the capture and emission effects in trap center, which is associated with field-assisted capture and the Poole-Frenkel effect, respectively. The electron mobility is calculated to be 950 cm2/V-s and the corresponding electron mobility-lifetime product is found to be 1.32 × 10-3 cm2/V by a modified Hecht equation with considering the surface recombination effect. It is concluded that the trapping time and de-trapping time obtained from LBIC measurement provide direct information concerning the transport process.</description><identifier>ISSN: 1674-1056</identifier><identifier>EISSN: 2058-3834</identifier><identifier>EISSN: 1741-4199</identifier><identifier>DOI: 10.1088/1674-1056/24/6/067203</identifier><language>eng</language><subject>Cadmium zinc tellurides ; Carrier transport ; CdZnTe ; Electric potential ; Electron mobility ; Mathematical analysis ; Trapping ; Voltage ; Waveforms ; 传输过程 ; 俘获 ; 半绝缘 ; 电场增强 ; 电子迁移率 ; 瞬态电流 ; 载流子</subject><ispartof>Chinese physics B, 2015-06, Vol.24 (6), p.511-515</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c313t-cf96411461cf711db291b80422d4267895e2ac5f69fbf58acec3ad9eef151c553</citedby><cites>FETCH-LOGICAL-c313t-cf96411461cf711db291b80422d4267895e2ac5f69fbf58acec3ad9eef151c553</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/85823A/85823A.jpg</thumbnail><link.rule.ids>314,780,784,27923,27924</link.rule.ids></links><search><creatorcontrib>郭榕榕 介万奇 查钢强 徐亚东 冯涛 王涛 杜卓同</creatorcontrib><title>Effect of de-trapping on carrier transport process in semi-insulating CdZnTe</title><title>Chinese physics B</title><addtitle>Chinese Physics</addtitle><description>The effect of de-trapping on the carrier transport process in the CdZ'nTe detector is studied by laser beam-induced transient current (LBIC) measurement. Trapping time, de-trapping time, and mobility for electrons are determined directly from transient waveforms under various bias voltages. The results suggest that an electric field strengthens the capture and emission effects in trap center, which is associated with field-assisted capture and the Poole-Frenkel effect, respectively. The electron mobility is calculated to be 950 cm2/V-s and the corresponding electron mobility-lifetime product is found to be 1.32 × 10-3 cm2/V by a modified Hecht equation with considering the surface recombination effect. It is concluded that the trapping time and de-trapping time obtained from LBIC measurement provide direct information concerning the transport process.</description><subject>Cadmium zinc tellurides</subject><subject>Carrier transport</subject><subject>CdZnTe</subject><subject>Electric potential</subject><subject>Electron mobility</subject><subject>Mathematical analysis</subject><subject>Trapping</subject><subject>Voltage</subject><subject>Waveforms</subject><subject>传输过程</subject><subject>俘获</subject><subject>半绝缘</subject><subject>电场增强</subject><subject>电子迁移率</subject><subject>瞬态电流</subject><subject>载流子</subject><issn>1674-1056</issn><issn>2058-3834</issn><issn>1741-4199</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNo9kE1LAzEQhoMoWKs_QQievKybydcmRym1CgUv9eIlpNmkrmyz22R78N-7S0tPA8Pzvsw8CD0CeQGiVAmy4gUQIUvKS1kSWVHCrtCMEqEKphi_RrMLc4vucv4lRAKhbIbWyxC8G3AXcO2LIdm-b-IOdxE7m1LjEx53MfddGnCfOudzxk3E2e-boon52Nph4hf1d9z4e3QTbJv9w3nO0dfbcrN4L9afq4_F67pwDNhQuKAlB-ASXKgA6i3VsFWEU1pzKiulhafWiSB12AahrPOO2Vp7H0CAE4LN0fOpd7zocPR5MPsmO9-2NvrumA1USlKiNIERFSfUpS7n5IPpU7O36c8AMZM9M5kxkxlDuZHmZG_MPZ1zP13cHcYfL0EpueZSg2L_utZuAw</recordid><startdate>20150601</startdate><enddate>20150601</enddate><creator>郭榕榕 介万奇 查钢强 徐亚东 冯涛 王涛 杜卓同</creator><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20150601</creationdate><title>Effect of de-trapping on carrier transport process in semi-insulating CdZnTe</title><author>郭榕榕 介万奇 查钢强 徐亚东 冯涛 王涛 杜卓同</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c313t-cf96411461cf711db291b80422d4267895e2ac5f69fbf58acec3ad9eef151c553</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Cadmium zinc tellurides</topic><topic>Carrier transport</topic><topic>CdZnTe</topic><topic>Electric potential</topic><topic>Electron mobility</topic><topic>Mathematical analysis</topic><topic>Trapping</topic><topic>Voltage</topic><topic>Waveforms</topic><topic>传输过程</topic><topic>俘获</topic><topic>半绝缘</topic><topic>电场增强</topic><topic>电子迁移率</topic><topic>瞬态电流</topic><topic>载流子</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>郭榕榕 介万奇 查钢强 徐亚东 冯涛 王涛 杜卓同</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Chinese physics B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>郭榕榕 介万奇 查钢强 徐亚东 冯涛 王涛 杜卓同</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of de-trapping on carrier transport process in semi-insulating CdZnTe</atitle><jtitle>Chinese physics B</jtitle><addtitle>Chinese Physics</addtitle><date>2015-06-01</date><risdate>2015</risdate><volume>24</volume><issue>6</issue><spage>511</spage><epage>515</epage><pages>511-515</pages><issn>1674-1056</issn><eissn>2058-3834</eissn><eissn>1741-4199</eissn><abstract>The effect of de-trapping on the carrier transport process in the CdZ'nTe detector is studied by laser beam-induced transient current (LBIC) measurement. Trapping time, de-trapping time, and mobility for electrons are determined directly from transient waveforms under various bias voltages. The results suggest that an electric field strengthens the capture and emission effects in trap center, which is associated with field-assisted capture and the Poole-Frenkel effect, respectively. The electron mobility is calculated to be 950 cm2/V-s and the corresponding electron mobility-lifetime product is found to be 1.32 × 10-3 cm2/V by a modified Hecht equation with considering the surface recombination effect. It is concluded that the trapping time and de-trapping time obtained from LBIC measurement provide direct information concerning the transport process.</abstract><doi>10.1088/1674-1056/24/6/067203</doi><tpages>5</tpages></addata></record> |
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subjects | Cadmium zinc tellurides Carrier transport CdZnTe Electric potential Electron mobility Mathematical analysis Trapping Voltage Waveforms 传输过程 俘获 半绝缘 电场增强 电子迁移率 瞬态电流 载流子 |
title | Effect of de-trapping on carrier transport process in semi-insulating CdZnTe |
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