Impact of Na Doping on the Carrier Transport Path in Polycrystalline Flexible Cu2ZnSn(S,Se)4 Solar Cells
Abstract It is well‐known that the alkali doping of polycrystalline Cu2ZnSn(S,Se)4 (CZTSSe) and Cu(In,Ga)(Se,S)2 has a beneficial influence on the device performance and there are various hypotheses about the principles of performance improvement. This work clearly explains the effect of Na doping o...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-11-01
|
| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.201903085 |
| _version_ | 1818212202286415872 |
|---|---|
| author | Woo‐Lim Jeong Kyung‐Pil Kim Juran Kim Ha Kyung Park Jung‐Hong Min Je‐Sung Lee Seung‐Hyun Mun Sung‐Tae Kim Jae‐Hyung Jang William Jo Dong‐Seon Lee |
| author_facet | Woo‐Lim Jeong Kyung‐Pil Kim Juran Kim Ha Kyung Park Jung‐Hong Min Je‐Sung Lee Seung‐Hyun Mun Sung‐Tae Kim Jae‐Hyung Jang William Jo Dong‐Seon Lee |
| author_sort | Woo‐Lim Jeong |
| collection | DOAJ |
| description | Abstract It is well‐known that the alkali doping of polycrystalline Cu2ZnSn(S,Se)4 (CZTSSe) and Cu(In,Ga)(Se,S)2 has a beneficial influence on the device performance and there are various hypotheses about the principles of performance improvement. This work clearly explains the effect of Na doping on the fill factor (FF) rather than on all of the solar cell parameters (open‐circuit voltage, FF, and sometimes short circuit current) for overall performance improvement. When doping is optimized, the fabricated device shows sufficient built‐in potential and selects a better carrier transport path by the high potential difference between the intragrains and the grain boundaries. On the other hand, when doping is excessive, the device shows low contact potential difference and FF and selects a worse carrier transport path even though the built‐in potential becomes stronger. The fabricated CZTSSe solar cell on a flexible metal foil optimized with a 25 nm thick NaF doping layer achieves an FF of 62.63%, thereby clearly showing the enhancing effect of Na doping. |
| first_indexed | 2024-12-12T05:44:39Z |
| format | Article |
| id | doaj.art-2db6eefc8a7f4ba0ac8196e8f0580b46 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-12T05:44:39Z |
| publishDate | 2020-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-2db6eefc8a7f4ba0ac8196e8f0580b462022-12-22T00:35:50ZengWileyAdvanced Science2198-38442020-11-01721n/an/a10.1002/advs.201903085Impact of Na Doping on the Carrier Transport Path in Polycrystalline Flexible Cu2ZnSn(S,Se)4 Solar CellsWoo‐Lim Jeong0Kyung‐Pil Kim1Juran Kim2Ha Kyung Park3Jung‐Hong Min4Je‐Sung Lee5Seung‐Hyun Mun6Sung‐Tae Kim7Jae‐Hyung Jang8William Jo9Dong‐Seon Lee10School of Electrical Engineering and Computer Science Gwangju Institute of Science and Technology Gwangju 61005 Republic of KoreaSchool of Electrical Engineering and Computer Science Gwangju Institute of Science and Technology Gwangju 61005 Republic of KoreaDepartment of Physics and New and Renewable Energy Research Center Ewha Womans University Seoul 03760 Republic of KoreaDepartment of Physics and New and Renewable Energy Research Center Ewha Womans University Seoul 03760 Republic of KoreaSchool of Electrical Engineering and Computer Science Gwangju Institute of Science and Technology Gwangju 61005 Republic of KoreaSchool of Electrical Engineering and Computer Science Gwangju Institute of Science and Technology Gwangju 61005 Republic of KoreaSchool of Electrical Engineering and Computer Science Gwangju Institute of Science and Technology Gwangju 61005 Republic of KoreaSchool of Electrical Engineering and Computer Science Gwangju Institute of Science and Technology Gwangju 61005 Republic of KoreaSchool of Electrical Engineering and Computer Science Gwangju Institute of Science and Technology Gwangju 61005 Republic of KoreaDepartment of Physics and New and Renewable Energy Research Center Ewha Womans University Seoul 03760 Republic of KoreaSchool of Electrical Engineering and Computer Science Gwangju Institute of Science and Technology Gwangju 61005 Republic of KoreaAbstract It is well‐known that the alkali doping of polycrystalline Cu2ZnSn(S,Se)4 (CZTSSe) and Cu(In,Ga)(Se,S)2 has a beneficial influence on the device performance and there are various hypotheses about the principles of performance improvement. This work clearly explains the effect of Na doping on the fill factor (FF) rather than on all of the solar cell parameters (open‐circuit voltage, FF, and sometimes short circuit current) for overall performance improvement. When doping is optimized, the fabricated device shows sufficient built‐in potential and selects a better carrier transport path by the high potential difference between the intragrains and the grain boundaries. On the other hand, when doping is excessive, the device shows low contact potential difference and FF and selects a worse carrier transport path even though the built‐in potential becomes stronger. The fabricated CZTSSe solar cell on a flexible metal foil optimized with a 25 nm thick NaF doping layer achieves an FF of 62.63%, thereby clearly showing the enhancing effect of Na doping.https://doi.org/10.1002/advs.201903085CZTSSethin‐film solar cellsflexible electronicsdopingcarrier transport |
| spellingShingle | Woo‐Lim Jeong Kyung‐Pil Kim Juran Kim Ha Kyung Park Jung‐Hong Min Je‐Sung Lee Seung‐Hyun Mun Sung‐Tae Kim Jae‐Hyung Jang William Jo Dong‐Seon Lee Impact of Na Doping on the Carrier Transport Path in Polycrystalline Flexible Cu2ZnSn(S,Se)4 Solar Cells Advanced Science CZTSSe thin‐film solar cells flexible electronics doping carrier transport |
| title | Impact of Na Doping on the Carrier Transport Path in Polycrystalline Flexible Cu2ZnSn(S,Se)4 Solar Cells |
| title_full | Impact of Na Doping on the Carrier Transport Path in Polycrystalline Flexible Cu2ZnSn(S,Se)4 Solar Cells |
| title_fullStr | Impact of Na Doping on the Carrier Transport Path in Polycrystalline Flexible Cu2ZnSn(S,Se)4 Solar Cells |
| title_full_unstemmed | Impact of Na Doping on the Carrier Transport Path in Polycrystalline Flexible Cu2ZnSn(S,Se)4 Solar Cells |
| title_short | Impact of Na Doping on the Carrier Transport Path in Polycrystalline Flexible Cu2ZnSn(S,Se)4 Solar Cells |
| title_sort | impact of na doping on the carrier transport path in polycrystalline flexible cu2znsn s se 4 solar cells |
| topic | CZTSSe thin‐film solar cells flexible electronics doping carrier transport |
| url | https://doi.org/10.1002/advs.201903085 |
| work_keys_str_mv | AT woolimjeong impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells AT kyungpilkim impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells AT jurankim impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells AT hakyungpark impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells AT junghongmin impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells AT jesunglee impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells AT seunghyunmun impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells AT sungtaekim impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells AT jaehyungjang impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells AT williamjo impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells AT dongseonlee impactofnadopingonthecarriertransportpathinpolycrystallineflexiblecu2znsnsse4solarcells |