Investigation of co-evaporated polycrystalline Cu(In,Ga)S2 thin film yielding 16.0 % efficiency solar cell
The interest for pure sulfide Cu(In,Ga)S2 chalcopyrite thin films is increasing again because their optical properties make them relevant candidates to be applied as top cell absorbers in tandem structures. Nonetheless, their use as so is still hindered by the level of single-junction cells performa...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2022-01-01
|
| Series: | EPJ Photovoltaics |
| Subjects: | |
| Online Access: | https://www.epj-pv.org/articles/epjpv/full_html/2022/01/pv220015/pv220015.html |
| _version_ | 1811216308829683712 |
|---|---|
| author | Barreau Nicolas Bertin Eugène Crossay Alexandre Durand Olivier Arzel Ludovic Harel Sylvie Lepetit Thomas Assmann Lionel Gautron Eric Lincot Daniel |
| author_facet | Barreau Nicolas Bertin Eugène Crossay Alexandre Durand Olivier Arzel Ludovic Harel Sylvie Lepetit Thomas Assmann Lionel Gautron Eric Lincot Daniel |
| author_sort | Barreau Nicolas |
| collection | DOAJ |
| description | The interest for pure sulfide Cu(In,Ga)S2 chalcopyrite thin films is increasing again because their optical properties make them relevant candidates to be applied as top cell absorbers in tandem structures. Nonetheless, their use as so is still hindered by the level of single-junction cells performance achieved so far, which are far below those demonstrated by selenide absorbers. Amongst the reasons at the origin of the limited efficiency of Cu(In,Ga)S2-based solar devices, one can mention the poor tolerance of S-chalcopyrite to Cu deficiency. In fact, Cu-poor Cu(In,Ga)S2 films contain CuIn5S8 thiospinel secondary phase which is harmful for device performance. In the present work, we investigate Cu(In,Ga)S2 thin films grown by a modified three-stage process making use of graded indium and gallium fluxes during the first stage. The resulting absorbers are single phase and made of large grains extended throughout the entire film thickness. We propose that such a morphology is a proof of the recrystallization of the entire film during the synthesis. Devices prepared from those films and buffered with bath deposited CdS demonstrate outstanding efficiency of 16.0%. Replacing CdS by Zn(O,S) buffer layer leads to increased open circuit voltage and short circuit current; however, performance become limited by lowered fill factor. |
| first_indexed | 2024-04-12T06:36:59Z |
| format | Article |
| id | doaj.art-7c81a9c51a924504980e64124623f846 |
| institution | Directory Open Access Journal |
| issn | 2105-0716 |
| language | English |
| last_indexed | 2024-04-12T06:36:59Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Photovoltaics |
| spelling | doaj.art-7c81a9c51a924504980e64124623f8462022-12-22T03:43:51ZengEDP SciencesEPJ Photovoltaics2105-07162022-01-01131710.1051/epjpv/2022014pv220015Investigation of co-evaporated polycrystalline Cu(In,Ga)S2 thin film yielding 16.0 % efficiency solar cellBarreau Nicolas0Bertin Eugène1Crossay Alexandre2Durand Olivier3Arzel Ludovic4Harel Sylvie5Lepetit Thomas6Assmann Lionel7Gautron Eric8Lincot Daniel9Nantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMNNantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMNCNRS, Institut Photovoltaïque d'Île de France, Ecole polytechnique-Institut polytechnique de Paris, Chimie Paristech-PSL, UMR 9006Université de Rennes, INSA Rennes, CNRS, Institut FOTON - UMR 6082Nantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMNNantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMNNantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMNNantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMNNantes Université, CNRS, Institut des Matériaux de Nantes Jean Rouxel, IMNCNRS, Institut Photovoltaïque d'Île de France, Ecole polytechnique-Institut polytechnique de Paris, Chimie Paristech-PSL, UMR 9006The interest for pure sulfide Cu(In,Ga)S2 chalcopyrite thin films is increasing again because their optical properties make them relevant candidates to be applied as top cell absorbers in tandem structures. Nonetheless, their use as so is still hindered by the level of single-junction cells performance achieved so far, which are far below those demonstrated by selenide absorbers. Amongst the reasons at the origin of the limited efficiency of Cu(In,Ga)S2-based solar devices, one can mention the poor tolerance of S-chalcopyrite to Cu deficiency. In fact, Cu-poor Cu(In,Ga)S2 films contain CuIn5S8 thiospinel secondary phase which is harmful for device performance. In the present work, we investigate Cu(In,Ga)S2 thin films grown by a modified three-stage process making use of graded indium and gallium fluxes during the first stage. The resulting absorbers are single phase and made of large grains extended throughout the entire film thickness. We propose that such a morphology is a proof of the recrystallization of the entire film during the synthesis. Devices prepared from those films and buffered with bath deposited CdS demonstrate outstanding efficiency of 16.0%. Replacing CdS by Zn(O,S) buffer layer leads to increased open circuit voltage and short circuit current; however, performance become limited by lowered fill factor.https://www.epj-pv.org/articles/epjpv/full_html/2022/01/pv220015/pv220015.htmlthin film solar cellwide bandgapsulfidecigshigh efficiency |
| spellingShingle | Barreau Nicolas Bertin Eugène Crossay Alexandre Durand Olivier Arzel Ludovic Harel Sylvie Lepetit Thomas Assmann Lionel Gautron Eric Lincot Daniel Investigation of co-evaporated polycrystalline Cu(In,Ga)S2 thin film yielding 16.0 % efficiency solar cell EPJ Photovoltaics thin film solar cell wide bandgap sulfide cigs high efficiency |
| title | Investigation of co-evaporated polycrystalline Cu(In,Ga)S2 thin film yielding 16.0 % efficiency solar cell |
| title_full | Investigation of co-evaporated polycrystalline Cu(In,Ga)S2 thin film yielding 16.0 % efficiency solar cell |
| title_fullStr | Investigation of co-evaporated polycrystalline Cu(In,Ga)S2 thin film yielding 16.0 % efficiency solar cell |
| title_full_unstemmed | Investigation of co-evaporated polycrystalline Cu(In,Ga)S2 thin film yielding 16.0 % efficiency solar cell |
| title_short | Investigation of co-evaporated polycrystalline Cu(In,Ga)S2 thin film yielding 16.0 % efficiency solar cell |
| title_sort | investigation of co evaporated polycrystalline cu in ga s2 thin film yielding 16 0 efficiency solar cell |
| topic | thin film solar cell wide bandgap sulfide cigs high efficiency |
| url | https://www.epj-pv.org/articles/epjpv/full_html/2022/01/pv220015/pv220015.html |
| work_keys_str_mv | AT barreaunicolas investigationofcoevaporatedpolycrystallinecuingas2thinfilmyielding160efficiencysolarcell AT bertineugene investigationofcoevaporatedpolycrystallinecuingas2thinfilmyielding160efficiencysolarcell AT crossayalexandre investigationofcoevaporatedpolycrystallinecuingas2thinfilmyielding160efficiencysolarcell AT durandolivier investigationofcoevaporatedpolycrystallinecuingas2thinfilmyielding160efficiencysolarcell AT arzelludovic investigationofcoevaporatedpolycrystallinecuingas2thinfilmyielding160efficiencysolarcell AT harelsylvie investigationofcoevaporatedpolycrystallinecuingas2thinfilmyielding160efficiencysolarcell AT lepetitthomas investigationofcoevaporatedpolycrystallinecuingas2thinfilmyielding160efficiencysolarcell AT assmannlionel investigationofcoevaporatedpolycrystallinecuingas2thinfilmyielding160efficiencysolarcell AT gautroneric investigationofcoevaporatedpolycrystallinecuingas2thinfilmyielding160efficiencysolarcell AT lincotdaniel investigationofcoevaporatedpolycrystallinecuingas2thinfilmyielding160efficiencysolarcell |