Studies on the use of liquid surface passivation for lifetime measurements on good-quality silicon wafers
We evaluated several liquid passivants, viz. solutions of iodine ethanol (IE), quinhydrone methanol (QHM), and potassium cyanide (KCN), for measuring minority-carrier lifetime. Lifetime was measured by the WCT-100 (Sinton Instruments) and WT-2000 (Semilab). Our results show that both IE and QHM pass...
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| creator | Devayajanam, S. Rupnowski, P. Shet, S. Sopori, B. L. Ravindra, N. M. Caskey, D. Chang, J. Covington, J. |
| description | We evaluated several liquid passivants, viz. solutions of iodine ethanol (IE), quinhydrone methanol (QHM), and potassium cyanide (KCN), for measuring minority-carrier lifetime. Lifetime was measured by the WCT-100 (Sinton Instruments) and WT-2000 (Semilab). Our results show that both IE and QHM passivation are reliable mechanisms. We also find that the KCN solution is moderately passivating on oxidized surfaces, but is only minimally effective on bare Si surfaces. This paper presents details of our studies. In particular, the effect of illumination on IE-passivated surfaces and possible reasons for variations in lifetime measurement are discussed. |
| doi_str_mv | 10.1109/PVSC.2011.6186272 |
| format | Conference Proceeding |
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L.</creatorcontrib><creatorcontrib>Ravindra, N. M.</creatorcontrib><creatorcontrib>Caskey, D.</creatorcontrib><creatorcontrib>Chang, J.</creatorcontrib><creatorcontrib>Covington, J.</creatorcontrib><creatorcontrib>National Renewable Energy Lab. (NREL), Golden, CO (United States)</creatorcontrib><title>Studies on the use of liquid surface passivation for lifetime measurements on good-quality silicon wafers</title><title>2011 37th IEEE Photovoltaic Specialists Conference</title><addtitle>PVSC</addtitle><description>We evaluated several liquid passivants, viz. solutions of iodine ethanol (IE), quinhydrone methanol (QHM), and potassium cyanide (KCN), for measuring minority-carrier lifetime. Lifetime was measured by the WCT-100 (Sinton Instruments) and WT-2000 (Semilab). Our results show that both IE and QHM passivation are reliable mechanisms. We also find that the KCN solution is moderately passivating on oxidized surfaces, but is only minimally effective on bare Si surfaces. This paper presents details of our studies. In particular, the effect of illumination on IE-passivated surfaces and possible reasons for variations in lifetime measurement are discussed.</description><subject>10 SYNTHETIC FUELS</subject><subject>BENZOQUINONES</subject><subject>Cleaning</subject><subject>CYANIDES</subject><subject>Degradation</subject><subject>ETHANOL</subject><subject>ILLUMINANCE</subject><subject>IODINE</subject><subject>LIFETIME</subject><subject>Lighting</subject><subject>MATERIALS SCIENCE</subject><subject>METHANOL</subject><subject>PASSIVATION</subject><subject>POTASSIUM</subject><subject>SILICON</subject><subject>SOLAR ENERGY</subject><subject>Solar Energy - Photovoltaics</subject><subject>Thickness measurement</subject><issn>0160-8371</issn><isbn>9781424499663</isbn><isbn>1424499666</isbn><isbn>9781424499649</isbn><isbn>142449964X</isbn><isbn>9781424499656</isbn><isbn>1424499658</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2011</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNpVkE9LAzEQxSMqWGo_gHgJ3rcmm2ySPUrxHxQUql6X7GZiR3a77Sar9NsbbC_OZZj3fjweQ8gVZ3POWXn7-rFazHPG-Vxxo3Kdn5BZqQ2XuZRlqWR5-u9W4oxMGFcsM0LzCzIL4Yul0Uwkb0JwFUeHEGi_oXENdAxAe09b3I3oaBgHbxugWxsCftuIifL9kGwPETugHdjEQAeb-Bfx2fcu2422xbinAVtskvhjPQzhkpx72waYHfeUvD_cvy2esuXL4_Pibpkh5zpmwmuuoW6EzV0phFVemppbJ2tfa2d9IY3NfUJdzlM1VRfKM21Y7mxdFMyKKbk55PYhYhUajNCsU40NNLHiTCpjVIKuDxACQLUdsLPDvjp-VPwCondpgQ</recordid><startdate>201106</startdate><enddate>201106</enddate><creator>Devayajanam, S.</creator><creator>Rupnowski, P.</creator><creator>Shet, S.</creator><creator>Sopori, B. 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M. ; Caskey, D. ; Chang, J. ; Covington, J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i117t-3f717ebc3a2d933a6f48b1ad4bfb7daf548a2f117d21ace6b56f07802dab550a3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2011</creationdate><topic>10 SYNTHETIC FUELS</topic><topic>BENZOQUINONES</topic><topic>Cleaning</topic><topic>CYANIDES</topic><topic>Degradation</topic><topic>ETHANOL</topic><topic>ILLUMINANCE</topic><topic>IODINE</topic><topic>LIFETIME</topic><topic>Lighting</topic><topic>MATERIALS SCIENCE</topic><topic>METHANOL</topic><topic>PASSIVATION</topic><topic>POTASSIUM</topic><topic>SILICON</topic><topic>SOLAR ENERGY</topic><topic>Solar Energy - Photovoltaics</topic><topic>Thickness measurement</topic><toplevel>online_resources</toplevel><creatorcontrib>Devayajanam, S.</creatorcontrib><creatorcontrib>Rupnowski, P.</creatorcontrib><creatorcontrib>Shet, S.</creatorcontrib><creatorcontrib>Sopori, B. L.</creatorcontrib><creatorcontrib>Ravindra, N. M.</creatorcontrib><creatorcontrib>Caskey, D.</creatorcontrib><creatorcontrib>Chang, J.</creatorcontrib><creatorcontrib>Covington, J.</creatorcontrib><creatorcontrib>National Renewable Energy Lab. (NREL), Golden, CO (United States)</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan (POP) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP) 1998-present</collection><collection>OSTI.GOV</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Devayajanam, S.</au><au>Rupnowski, P.</au><au>Shet, S.</au><au>Sopori, B. L.</au><au>Ravindra, N. M.</au><au>Caskey, D.</au><au>Chang, J.</au><au>Covington, J.</au><aucorp>National Renewable Energy Lab. (NREL), Golden, CO (United States)</aucorp><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Studies on the use of liquid surface passivation for lifetime measurements on good-quality silicon wafers</atitle><btitle>2011 37th IEEE Photovoltaic Specialists Conference</btitle><stitle>PVSC</stitle><date>2011-06</date><risdate>2011</risdate><spage>001647</spage><epage>001651</epage><pages>001647-001651</pages><issn>0160-8371</issn><isbn>9781424499663</isbn><isbn>1424499666</isbn><eisbn>9781424499649</eisbn><eisbn>142449964X</eisbn><eisbn>9781424499656</eisbn><eisbn>1424499658</eisbn><abstract>We evaluated several liquid passivants, viz. solutions of iodine ethanol (IE), quinhydrone methanol (QHM), and potassium cyanide (KCN), for measuring minority-carrier lifetime. Lifetime was measured by the WCT-100 (Sinton Instruments) and WT-2000 (Semilab). Our results show that both IE and QHM passivation are reliable mechanisms. We also find that the KCN solution is moderately passivating on oxidized surfaces, but is only minimally effective on bare Si surfaces. This paper presents details of our studies. In particular, the effect of illumination on IE-passivated surfaces and possible reasons for variations in lifetime measurement are discussed.</abstract><cop>United States</cop><pub>IEEE</pub><doi>10.1109/PVSC.2011.6186272</doi><tpages>5</tpages></addata></record> |
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| identifier | ISSN: 0160-8371 |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | 10 SYNTHETIC FUELS BENZOQUINONES Cleaning CYANIDES Degradation ETHANOL ILLUMINANCE IODINE LIFETIME Lighting MATERIALS SCIENCE METHANOL PASSIVATION POTASSIUM SILICON SOLAR ENERGY Solar Energy - Photovoltaics Thickness measurement |
| title | Studies on the use of liquid surface passivation for lifetime measurements on good-quality silicon wafers |
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