Stabilization of the J-V characteristic of a perovskite solar cell using an intelligent control loop
The phenomena related to charge trapping are among the most relevant open issues that affect the long-term stability of perovskite-based devices. According to this, the objective of this paper is to report experimental results in which a charge control strategy is used for the first time in a solar...
| Authors: | ; ; ; ; ; ; ; |
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| Format: | Article |
| Publication date: | 2021 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | English |
| OAI Identifier: | oai:upcommons.upc.edu:2117/365705 |
| Online Access: | https://hdl.handle.net/2117/365705 https://dx.doi.org/10.3390/electronics10020121 |
| Access Level: | Open access |
| Keyword: | Perovskite Solar cells Perovskite Solar Cell Cèl·lules solars Àrees temàtiques de la UPC::Física |
| Summary: | The phenomena related to charge trapping are among the most relevant open issues that affect the long-term stability of perovskite-based devices. According to this, the objective of this paper is to report experimental results in which a charge control strategy is used for the first time in a solar cell structure that has a high trap density perovskite absorber. This device has also noticeable J-V hysteresis, produced by non-capacitive effects. The control strategy proposed, based on sigma-delta modulation, applies to the device an appropriate sequence of voltage waveforms determined after periodical current measurements made at a constant voltage. The experimental results obtained and the fittings made with a phenomenological model indicate that this approach allows controlling several charge-related effects. As a consequence, the J-V characteristic of the device is successfully shifted and stabilized to predetermined positions. |
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