Influences of buffer material and fabrication atmosphere on the electrical properties of CdTe solar cells
The electrical properties such as interface energy barriers, defect energy levels, and densities dictate the performance of thin film solar cells. Here, we show that these properties can be quantified in cadmium telluride (CdTe) thin‐film solar cells using admittance spectroscopy‐based techniques. O...
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| creator | Awni, Rasha A. Li, Deng‐Bing Song, Zhaoning Bista, Sandip S. Razooqi, Mohammed A. Grice, Corey R. Chen, Lei Liyanage, Geethika K. Li, Chongwen Phillips, Adam B. Heben, Michael J. Ellingson, Randy J. Li, Jian V. Yan, Yanfa |
| description | The electrical properties such as interface energy barriers, defect energy levels, and densities dictate the performance of thin film solar cells. Here, we show that these properties can be quantified in cadmium telluride (CdTe) thin‐film solar cells using admittance spectroscopy‐based techniques. Our results reveal that the electrical properties in CdTe thin‐film solar cells depend on both buffer material and the fabrication atmosphere. We find that only a negligible front contact barrier exists at the CdS/CdTe front junction regardless of the fabrication atmospheres, while an obvious front barriers are observed at the ZnMgO (ZMO)/CdTe junctions. Both CdS/CdTe and ZMO/CdTe solar cells exhibit back contact barrier. The energy level of defects is shallower in CdS/CdTe cells than in ZMO/CdTe cells. The fabrication atmosphere influences the electrical properties, i.e., an oxygen‐free atmosphere reduces the front and back barrier heights and lowers the energy level of defects. The results provide critical insights for understanding and optimizing the performance of CdTe thin‐film solar cells.
A three‐subcircuit model with explicit representation of the front contact barrier is developed to measure the front and back contact barrier heights as well as energy levels and densities of defects at interface and in absorber of CdTe thin‐film solar cells using impedance spectroscopy. |
| doi_str_mv | 10.1002/pip.3192 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_1561355</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2316958249</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3592-3847942cb864918f5bd08e9feb917d6327b902e3f69de7843753fecacc7ff6403</originalsourceid><addsrcrecordid>eNp10F1LwzAUBuAiCs4p-BOC3njTmY-mbS5l-DEYuIsJ3oU0PWEZWVOTFNm_t7PeenVyyMPh5c2yW4IXBGP62Nt-wYigZ9mMYCFywsXn-eld0rwSgl9mVzHuMSZVLcpZZledcQN0GiLyBjWDMRDQQSUIVjmkuhYZ1QSrVbK-QyodfOx3EACNW9oBAgc6nf4d6oPvISQ7nVq2W0DROxWQBufidXZhlItw8zfn2cfL83b5lq_fX1fLp3WuGRc0Z3VRiYLqpi4LQWrDmxbXIAw0glRtyWjVCEyBmVK0UNUFqzgzoJXWlTFlgdk8u5vu-pisjNom0Dvtu27MKQkvCeN8RPcTGjN_DRCT3PshdGMuSRkpBa9pIUb1MCkdfIwBjOyDPahwlATLU9tybFue2h5pPtFv6-D4r5Ob1ebX_wANFIDy</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2316958249</pqid></control><display><type>article</type><title>Influences of buffer material and fabrication atmosphere on the electrical properties of CdTe solar cells</title><source>Wiley Online Library All Journals</source><creator>Awni, Rasha A. ; Li, Deng‐Bing ; Song, Zhaoning ; Bista, Sandip S. ; Razooqi, Mohammed A. ; Grice, Corey R. ; Chen, Lei ; Liyanage, Geethika K. ; Li, Chongwen ; Phillips, Adam B. ; Heben, Michael J. ; Ellingson, Randy J. ; Li, Jian V. ; Yan, Yanfa</creator><creatorcontrib>Awni, Rasha A. ; Li, Deng‐Bing ; Song, Zhaoning ; Bista, Sandip S. ; Razooqi, Mohammed A. ; Grice, Corey R. ; Chen, Lei ; Liyanage, Geethika K. ; Li, Chongwen ; Phillips, Adam B. ; Heben, Michael J. ; Ellingson, Randy J. ; Li, Jian V. ; Yan, Yanfa</creatorcontrib><description>The electrical properties such as interface energy barriers, defect energy levels, and densities dictate the performance of thin film solar cells. Here, we show that these properties can be quantified in cadmium telluride (CdTe) thin‐film solar cells using admittance spectroscopy‐based techniques. Our results reveal that the electrical properties in CdTe thin‐film solar cells depend on both buffer material and the fabrication atmosphere. We find that only a negligible front contact barrier exists at the CdS/CdTe front junction regardless of the fabrication atmospheres, while an obvious front barriers are observed at the ZnMgO (ZMO)/CdTe junctions. Both CdS/CdTe and ZMO/CdTe solar cells exhibit back contact barrier. The energy level of defects is shallower in CdS/CdTe cells than in ZMO/CdTe cells. The fabrication atmosphere influences the electrical properties, i.e., an oxygen‐free atmosphere reduces the front and back barrier heights and lowers the energy level of defects. The results provide critical insights for understanding and optimizing the performance of CdTe thin‐film solar cells.
A three‐subcircuit model with explicit representation of the front contact barrier is developed to measure the front and back contact barrier heights as well as energy levels and densities of defects at interface and in absorber of CdTe thin‐film solar cells using impedance spectroscopy.</description><identifier>ISSN: 1062-7995</identifier><identifier>EISSN: 1099-159X</identifier><identifier>DOI: 10.1002/pip.3192</identifier><language>eng</language><publisher>Bognor Regis: Wiley Subscription Services, Inc</publisher><subject>admittance spectroscopy ; Buffers ; Cadmium sulfide ; Cadmium telluride ; Cadmium tellurides ; Defects ; Electric contacts ; Electrical impedance ; Electrical junctions ; Electrical properties ; Energy levels ; equivalent circuit ; Free atmosphere ; interface barriers ; Photovoltaic cells ; Solar cells ; Thin films</subject><ispartof>Progress in photovoltaics, 2019-12, Vol.27 (12), p.1115-1123</ispartof><rights>2019 John Wiley & Sons, Ltd.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3592-3847942cb864918f5bd08e9feb917d6327b902e3f69de7843753fecacc7ff6403</citedby><cites>FETCH-LOGICAL-c3592-3847942cb864918f5bd08e9feb917d6327b902e3f69de7843753fecacc7ff6403</cites><orcidid>0000-0003-2206-9140 ; 0000-0003-4555-4894 ; 0000-0002-5971-0934 ; 0000-0002-6677-0994 ; 0000-0002-2675-5052 ; 0000-0001-9520-6586 ; 0000-0003-3977-5789 ; 0000-0001-5567-5927 ; 0000-0003-4000-0729 ; 0000-0002-3788-3471 ; 0000-0003-0162-8468 ; 0000-0001-8514-190X ; 0000-0002-0841-5943 ; 0000-0003-3623-3044 ; 0000000345554894 ; 0000000155675927 ; 0000000301628468 ; 0000000339775789 ; 0000000208415943 ; 0000000322069140 ; 0000000336233044 ; 0000000195206586 ; 0000000259710934 ; 0000000266770994 ; 0000000340000729 ; 0000000237883471 ; 000000018514190X ; 0000000226755052</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fpip.3192$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fpip.3192$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,776,780,881,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1561355$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Awni, Rasha A.</creatorcontrib><creatorcontrib>Li, Deng‐Bing</creatorcontrib><creatorcontrib>Song, Zhaoning</creatorcontrib><creatorcontrib>Bista, Sandip S.</creatorcontrib><creatorcontrib>Razooqi, Mohammed A.</creatorcontrib><creatorcontrib>Grice, Corey R.</creatorcontrib><creatorcontrib>Chen, Lei</creatorcontrib><creatorcontrib>Liyanage, Geethika K.</creatorcontrib><creatorcontrib>Li, Chongwen</creatorcontrib><creatorcontrib>Phillips, Adam B.</creatorcontrib><creatorcontrib>Heben, Michael J.</creatorcontrib><creatorcontrib>Ellingson, Randy J.</creatorcontrib><creatorcontrib>Li, Jian V.</creatorcontrib><creatorcontrib>Yan, Yanfa</creatorcontrib><title>Influences of buffer material and fabrication atmosphere on the electrical properties of CdTe solar cells</title><title>Progress in photovoltaics</title><description>The electrical properties such as interface energy barriers, defect energy levels, and densities dictate the performance of thin film solar cells. Here, we show that these properties can be quantified in cadmium telluride (CdTe) thin‐film solar cells using admittance spectroscopy‐based techniques. Our results reveal that the electrical properties in CdTe thin‐film solar cells depend on both buffer material and the fabrication atmosphere. We find that only a negligible front contact barrier exists at the CdS/CdTe front junction regardless of the fabrication atmospheres, while an obvious front barriers are observed at the ZnMgO (ZMO)/CdTe junctions. Both CdS/CdTe and ZMO/CdTe solar cells exhibit back contact barrier. The energy level of defects is shallower in CdS/CdTe cells than in ZMO/CdTe cells. The fabrication atmosphere influences the electrical properties, i.e., an oxygen‐free atmosphere reduces the front and back barrier heights and lowers the energy level of defects. The results provide critical insights for understanding and optimizing the performance of CdTe thin‐film solar cells.
A three‐subcircuit model with explicit representation of the front contact barrier is developed to measure the front and back contact barrier heights as well as energy levels and densities of defects at interface and in absorber of CdTe thin‐film solar cells using impedance spectroscopy.</description><subject>admittance spectroscopy</subject><subject>Buffers</subject><subject>Cadmium sulfide</subject><subject>Cadmium telluride</subject><subject>Cadmium tellurides</subject><subject>Defects</subject><subject>Electric contacts</subject><subject>Electrical impedance</subject><subject>Electrical junctions</subject><subject>Electrical properties</subject><subject>Energy levels</subject><subject>equivalent circuit</subject><subject>Free atmosphere</subject><subject>interface barriers</subject><subject>Photovoltaic cells</subject><subject>Solar cells</subject><subject>Thin films</subject><issn>1062-7995</issn><issn>1099-159X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp10F1LwzAUBuAiCs4p-BOC3njTmY-mbS5l-DEYuIsJ3oU0PWEZWVOTFNm_t7PeenVyyMPh5c2yW4IXBGP62Nt-wYigZ9mMYCFywsXn-eld0rwSgl9mVzHuMSZVLcpZZledcQN0GiLyBjWDMRDQQSUIVjmkuhYZ1QSrVbK-QyodfOx3EACNW9oBAgc6nf4d6oPvISQ7nVq2W0DROxWQBufidXZhlItw8zfn2cfL83b5lq_fX1fLp3WuGRc0Z3VRiYLqpi4LQWrDmxbXIAw0glRtyWjVCEyBmVK0UNUFqzgzoJXWlTFlgdk8u5vu-pisjNom0Dvtu27MKQkvCeN8RPcTGjN_DRCT3PshdGMuSRkpBa9pIUb1MCkdfIwBjOyDPahwlATLU9tybFue2h5pPtFv6-D4r5Ob1ebX_wANFIDy</recordid><startdate>201912</startdate><enddate>201912</enddate><creator>Awni, Rasha A.</creator><creator>Li, Deng‐Bing</creator><creator>Song, Zhaoning</creator><creator>Bista, Sandip S.</creator><creator>Razooqi, Mohammed A.</creator><creator>Grice, Corey R.</creator><creator>Chen, Lei</creator><creator>Liyanage, Geethika K.</creator><creator>Li, Chongwen</creator><creator>Phillips, Adam B.</creator><creator>Heben, Michael J.</creator><creator>Ellingson, Randy J.</creator><creator>Li, Jian V.</creator><creator>Yan, Yanfa</creator><general>Wiley Subscription Services, Inc</general><general>Wiley Blackwell (John Wiley & Sons)</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>L7M</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0003-2206-9140</orcidid><orcidid>https://orcid.org/0000-0003-4555-4894</orcidid><orcidid>https://orcid.org/0000-0002-5971-0934</orcidid><orcidid>https://orcid.org/0000-0002-6677-0994</orcidid><orcidid>https://orcid.org/0000-0002-2675-5052</orcidid><orcidid>https://orcid.org/0000-0001-9520-6586</orcidid><orcidid>https://orcid.org/0000-0003-3977-5789</orcidid><orcidid>https://orcid.org/0000-0001-5567-5927</orcidid><orcidid>https://orcid.org/0000-0003-4000-0729</orcidid><orcidid>https://orcid.org/0000-0002-3788-3471</orcidid><orcidid>https://orcid.org/0000-0003-0162-8468</orcidid><orcidid>https://orcid.org/0000-0001-8514-190X</orcidid><orcidid>https://orcid.org/0000-0002-0841-5943</orcidid><orcidid>https://orcid.org/0000-0003-3623-3044</orcidid><orcidid>https://orcid.org/0000000345554894</orcidid><orcidid>https://orcid.org/0000000155675927</orcidid><orcidid>https://orcid.org/0000000301628468</orcidid><orcidid>https://orcid.org/0000000339775789</orcidid><orcidid>https://orcid.org/0000000208415943</orcidid><orcidid>https://orcid.org/0000000322069140</orcidid><orcidid>https://orcid.org/0000000336233044</orcidid><orcidid>https://orcid.org/0000000195206586</orcidid><orcidid>https://orcid.org/0000000259710934</orcidid><orcidid>https://orcid.org/0000000266770994</orcidid><orcidid>https://orcid.org/0000000340000729</orcidid><orcidid>https://orcid.org/0000000237883471</orcidid><orcidid>https://orcid.org/000000018514190X</orcidid><orcidid>https://orcid.org/0000000226755052</orcidid></search><sort><creationdate>201912</creationdate><title>Influences of buffer material and fabrication atmosphere on the electrical properties of CdTe solar cells</title><author>Awni, Rasha A. ; Li, Deng‐Bing ; Song, Zhaoning ; Bista, Sandip S. ; Razooqi, Mohammed A. ; Grice, Corey R. ; Chen, Lei ; Liyanage, Geethika K. ; Li, Chongwen ; Phillips, Adam B. ; Heben, Michael J. ; Ellingson, Randy J. ; Li, Jian V. ; Yan, Yanfa</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3592-3847942cb864918f5bd08e9feb917d6327b902e3f69de7843753fecacc7ff6403</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>admittance spectroscopy</topic><topic>Buffers</topic><topic>Cadmium sulfide</topic><topic>Cadmium telluride</topic><topic>Cadmium tellurides</topic><topic>Defects</topic><topic>Electric contacts</topic><topic>Electrical impedance</topic><topic>Electrical junctions</topic><topic>Electrical properties</topic><topic>Energy levels</topic><topic>equivalent circuit</topic><topic>Free atmosphere</topic><topic>interface barriers</topic><topic>Photovoltaic cells</topic><topic>Solar cells</topic><topic>Thin films</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Awni, Rasha A.</creatorcontrib><creatorcontrib>Li, Deng‐Bing</creatorcontrib><creatorcontrib>Song, Zhaoning</creatorcontrib><creatorcontrib>Bista, Sandip S.</creatorcontrib><creatorcontrib>Razooqi, Mohammed A.</creatorcontrib><creatorcontrib>Grice, Corey R.</creatorcontrib><creatorcontrib>Chen, Lei</creatorcontrib><creatorcontrib>Liyanage, Geethika K.</creatorcontrib><creatorcontrib>Li, Chongwen</creatorcontrib><creatorcontrib>Phillips, Adam B.</creatorcontrib><creatorcontrib>Heben, Michael J.</creatorcontrib><creatorcontrib>Ellingson, Randy J.</creatorcontrib><creatorcontrib>Li, Jian V.</creatorcontrib><creatorcontrib>Yan, Yanfa</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Progress in photovoltaics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Awni, Rasha A.</au><au>Li, Deng‐Bing</au><au>Song, Zhaoning</au><au>Bista, Sandip S.</au><au>Razooqi, Mohammed A.</au><au>Grice, Corey R.</au><au>Chen, Lei</au><au>Liyanage, Geethika K.</au><au>Li, Chongwen</au><au>Phillips, Adam B.</au><au>Heben, Michael J.</au><au>Ellingson, Randy J.</au><au>Li, Jian V.</au><au>Yan, Yanfa</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influences of buffer material and fabrication atmosphere on the electrical properties of CdTe solar cells</atitle><jtitle>Progress in photovoltaics</jtitle><date>2019-12</date><risdate>2019</risdate><volume>27</volume><issue>12</issue><spage>1115</spage><epage>1123</epage><pages>1115-1123</pages><issn>1062-7995</issn><eissn>1099-159X</eissn><abstract>The electrical properties such as interface energy barriers, defect energy levels, and densities dictate the performance of thin film solar cells. Here, we show that these properties can be quantified in cadmium telluride (CdTe) thin‐film solar cells using admittance spectroscopy‐based techniques. Our results reveal that the electrical properties in CdTe thin‐film solar cells depend on both buffer material and the fabrication atmosphere. We find that only a negligible front contact barrier exists at the CdS/CdTe front junction regardless of the fabrication atmospheres, while an obvious front barriers are observed at the ZnMgO (ZMO)/CdTe junctions. Both CdS/CdTe and ZMO/CdTe solar cells exhibit back contact barrier. The energy level of defects is shallower in CdS/CdTe cells than in ZMO/CdTe cells. The fabrication atmosphere influences the electrical properties, i.e., an oxygen‐free atmosphere reduces the front and back barrier heights and lowers the energy level of defects. The results provide critical insights for understanding and optimizing the performance of CdTe thin‐film solar cells.
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| subjects | admittance spectroscopy Buffers Cadmium sulfide Cadmium telluride Cadmium tellurides Defects Electric contacts Electrical impedance Electrical junctions Electrical properties Energy levels equivalent circuit Free atmosphere interface barriers Photovoltaic cells Solar cells Thin films |
| title | Influences of buffer material and fabrication atmosphere on the electrical properties of CdTe solar cells |
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