Photo-Induced Black Phase Stabilization of CsPbI<sub>3</sub> QDs Films
α-CsPbI<sub>3</sub> quantum dots (QDs) show outstanding photoelectrical properties that had been harnessed in the fabrication of perovskite QDs solar cells. Nevertheless, the stabilization of the CsPbI<sub>3</sub> perovskite cubic phase remains a challenge due to its own ther...
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MDPI AG
2020-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/8/1586 |
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| author | Eider A. Erazo H.E. Sánchez-Godoy Andrés F. Gualdrón-Reyes Sofia Masi Iván Mora-Seró |
| author_facet | Eider A. Erazo H.E. Sánchez-Godoy Andrés F. Gualdrón-Reyes Sofia Masi Iván Mora-Seró |
| author_sort | Eider A. Erazo |
| collection | DOAJ |
| description | α-CsPbI<sub>3</sub> quantum dots (QDs) show outstanding photoelectrical properties that had been harnessed in the fabrication of perovskite QDs solar cells. Nevertheless, the stabilization of the CsPbI<sub>3</sub> perovskite cubic phase remains a challenge due to its own thermodynamic and the presence of surface defects. Herein, we report the optimization of the CsPbI<sub>3</sub> QDs solar cells, by monitoring the structure, the morphology and the optoelectronic properties after a precise treatment, consisting of the conventional solvent washing with a time limited ultraviolet (UV) exposure combination, during the layer-by-layer deposition. The UV treatment compensates the defects coming from the essential but deleterious washing treatment. The material is stable for 200 h and the PCE improved by the 25% compared with that of the device without UV treatment. The photo-enhanced ion mobility mechanism is discussed as the main process for the CsPbI<sub>3</sub> QDs and solar cell stability. |
| first_indexed | 2024-03-10T17:33:34Z |
| format | Article |
| id | doaj.art-5ec2ab96474e465f8953660c51563777 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T17:33:34Z |
| publishDate | 2020-08-01 |
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| series | Nanomaterials |
| spelling | doaj.art-5ec2ab96474e465f8953660c515637772023-11-20T09:56:00ZengMDPI AGNanomaterials2079-49912020-08-01108158610.3390/nano10081586Photo-Induced Black Phase Stabilization of CsPbI<sub>3</sub> QDs FilmsEider A. Erazo0H.E. Sánchez-Godoy1Andrés F. Gualdrón-Reyes2Sofia Masi3Iván Mora-Seró4Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castellón de la Plana, SpainInstitute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castellón de la Plana, SpainInstitute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castellón de la Plana, SpainInstitute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castellón de la Plana, SpainInstitute of Advanced Materials (INAM), Universitat Jaume I (UJI), Avenida de Vicent Sos Baynat, s/n, 12071 Castellón de la Plana, Spainα-CsPbI<sub>3</sub> quantum dots (QDs) show outstanding photoelectrical properties that had been harnessed in the fabrication of perovskite QDs solar cells. Nevertheless, the stabilization of the CsPbI<sub>3</sub> perovskite cubic phase remains a challenge due to its own thermodynamic and the presence of surface defects. Herein, we report the optimization of the CsPbI<sub>3</sub> QDs solar cells, by monitoring the structure, the morphology and the optoelectronic properties after a precise treatment, consisting of the conventional solvent washing with a time limited ultraviolet (UV) exposure combination, during the layer-by-layer deposition. The UV treatment compensates the defects coming from the essential but deleterious washing treatment. The material is stable for 200 h and the PCE improved by the 25% compared with that of the device without UV treatment. The photo-enhanced ion mobility mechanism is discussed as the main process for the CsPbI<sub>3</sub> QDs and solar cell stability.https://www.mdpi.com/2079-4991/10/8/1586CsPbI<sub>3</sub> QDsstabilitysolar cellsUV photo-induced stabilization |
| spellingShingle | Eider A. Erazo H.E. Sánchez-Godoy Andrés F. Gualdrón-Reyes Sofia Masi Iván Mora-Seró Photo-Induced Black Phase Stabilization of CsPbI<sub>3</sub> QDs Films Nanomaterials CsPbI<sub>3</sub> QDs stability solar cells UV photo-induced stabilization |
| title | Photo-Induced Black Phase Stabilization of CsPbI<sub>3</sub> QDs Films |
| title_full | Photo-Induced Black Phase Stabilization of CsPbI<sub>3</sub> QDs Films |
| title_fullStr | Photo-Induced Black Phase Stabilization of CsPbI<sub>3</sub> QDs Films |
| title_full_unstemmed | Photo-Induced Black Phase Stabilization of CsPbI<sub>3</sub> QDs Films |
| title_short | Photo-Induced Black Phase Stabilization of CsPbI<sub>3</sub> QDs Films |
| title_sort | photo induced black phase stabilization of cspbi sub 3 sub qds films |
| topic | CsPbI<sub>3</sub> QDs stability solar cells UV photo-induced stabilization |
| url | https://www.mdpi.com/2079-4991/10/8/1586 |
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