Understanding the AC Equivalent Circuit Response of Ultrathin Cu(In,Ga)Se2 Solar Cells
| Main Authors: | José M. V. Cunha, Célia Rocha, Carlos Vinhais, Paulo A. Fernandes, Pedro M. P. Salomé |
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| Format: | info publication-preprint Journal |
| Terbitan: |
, 2020
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| Online Access: |
https://zenodo.org/record/4479720 |
Daftar Isi:
- The present work aims to study the AC electrical response of standard-thick, ultrathin and passivated ultrathin CIGS solar cells. Ultrathin Cu(In,Ga)Se2 (CIGS) is desired to reduce production costs of CIGS solar cells. Equivalent circuits for modeling the behavior of each type of solar cells in AC regime are based on admittance measurements. It is of the utmost importance to understand the AC electrical behavior of each device, as the electrical behavior of ultrathin and passivated ultrathin CIGS devices are yet to be fully understood. The analysis shows a simpler AC equivalent circuit for the ultrathin device without passivation layer, which might be explained by the lowered bulk recombination for thin film CIGS solar cells when compared with reference thick ones. Moreover, it is observed an increase in shunt resistance for the passivated ultrathin device, which strengthens the importance of passivation for shunts mitigation when compared to unpassivated devices.
- This work was supported in part by NovaCell (028075) and InovSolarCells (029696) and in part by Fundação para a Ciência e a Tecnologia and the ERDF through COMPETE2020. Fundação para a Ciência e a Tecnologia (FCT) is acknowledged through IF/00133/2015 and PD/BD/142780/2018. The European Union's Horizon 2020 research and innovation programme ARCIGS-M project (Grant agreement 720887) is acknowledged.