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MOCVD of II-VI HRT/emitters for V<sub>oc</sub> improvements to CdTe solar cells
CdTe solar cells were produced using metal organic chemical vapour deposition (MOCVD), which employed a (Zn,Al)S (AZS) high resistant transparent (HRT) layer at the transparent conducting oxide (TCO)/Cd(Zn)S emitter interface, to enable the higher annealing temperature of 440 °C to be employed in th...
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| Main Authors: | , , , , , , , |
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| Format: | Default Article |
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2022
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| Online Access: | https://hdl.handle.net/2134/19195649.v1 |
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| _version_ | 1818166117658525696 |
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| author | Andrew J Clayton Ali Abbas Peter J Siderfin Stephen Jones Ana Teloeken Ochai Oklobia Michael Walls Stuart JC Irvine |
| author_facet | Andrew J Clayton Ali Abbas Peter J Siderfin Stephen Jones Ana Teloeken Ochai Oklobia Michael Walls Stuart JC Irvine |
| author_sort | Andrew J Clayton (12105455) |
| collection | Figshare |
| description | CdTe solar cells were produced using metal organic chemical vapour deposition (MOCVD), which employed a (Zn,Al)S (AZS) high resistant transparent (HRT) layer at the transparent conducting oxide (TCO)/Cd(Zn)S emitter interface, to enable the higher annealing temperature of 440 °C to be employed in the chlorine heat treatment (CHT) process. The AZS HRT remained intact with conformal coverage over the TCO after performing the high CHT annealing, confirmed by cross-section scanning transmission electron microscopy coupled with energy-dispersive X-ray spectroscopy (STEM-EDX) characterisation, which also revealed the Cd(Zn)S emitter layer having been consumed by the CdTe absorber via interdiffusion. The more aggressive CHT resulted in large CdTe grains. The combination of AZS HRT and aggressive CHT increased open circuit voltage (Voc) and improved solar cell performance. |
| format | Default Article |
| id | rr-article-19195649 |
| institution | Loughborough University |
| publishDate | 2022 |
| record_format | Figshare |
| spelling | rr-article-191956492022-02-16T00:00:00Z MOCVD of II-VI HRT/emitters for V<sub>oc</sub> improvements to CdTe solar cells Andrew J Clayton (12105455) Ali Abbas (1253115) Peter J Siderfin (12105458) Stephen Jones (55502) Ana Teloeken (12105461) Ochai Oklobia (12105464) Michael Walls (1251705) Stuart JC Irvine (12105467) MOCVD CdTe photovoltaics STEM-EDX CdTe solar cells were produced using metal organic chemical vapour deposition (MOCVD), which employed a (Zn,Al)S (AZS) high resistant transparent (HRT) layer at the transparent conducting oxide (TCO)/Cd(Zn)S emitter interface, to enable the higher annealing temperature of 440 °C to be employed in the chlorine heat treatment (CHT) process. The AZS HRT remained intact with conformal coverage over the TCO after performing the high CHT annealing, confirmed by cross-section scanning transmission electron microscopy coupled with energy-dispersive X-ray spectroscopy (STEM-EDX) characterisation, which also revealed the Cd(Zn)S emitter layer having been consumed by the CdTe absorber via interdiffusion. The more aggressive CHT resulted in large CdTe grains. The combination of AZS HRT and aggressive CHT increased open circuit voltage (Voc) and improved solar cell performance. 2022-02-16T00:00:00Z Text Journal contribution 2134/19195649.v1 https://figshare.com/articles/journal_contribution/MOCVD_of_II-VI_HRT_emitters_for_V_sub_oc_sub_improvements_to_CdTe_solar_cells/19195649 CC BY 4.0 |
| spellingShingle | MOCVD CdTe photovoltaics STEM-EDX Andrew J Clayton Ali Abbas Peter J Siderfin Stephen Jones Ana Teloeken Ochai Oklobia Michael Walls Stuart JC Irvine MOCVD of II-VI HRT/emitters for V<sub>oc</sub> improvements to CdTe solar cells |
| title | MOCVD of II-VI HRT/emitters for V<sub>oc</sub> improvements to CdTe solar cells |
| title_full | MOCVD of II-VI HRT/emitters for V<sub>oc</sub> improvements to CdTe solar cells |
| title_fullStr | MOCVD of II-VI HRT/emitters for V<sub>oc</sub> improvements to CdTe solar cells |
| title_full_unstemmed | MOCVD of II-VI HRT/emitters for V<sub>oc</sub> improvements to CdTe solar cells |
| title_short | MOCVD of II-VI HRT/emitters for V<sub>oc</sub> improvements to CdTe solar cells |
| title_sort | mocvd of ii-vi hrt/emitters for v<sub>oc</sub> improvements to cdte solar cells |
| topic | MOCVD CdTe photovoltaics STEM-EDX |
| url | https://hdl.handle.net/2134/19195649.v1 |