Fullerene-Passivated Methylammonium Lead Iodide Perovskite Absorber for High-Performance Self-Powered Photodetectors with Ultrafast Response and Broadband Detectivity
We herein report the enhanced electrical properties of self-powered perovskite-based photodetectors with high sensitivity and responsivity by applying the surface passivation strategy using C<sub>60</sub> (fullerene) as a surface passivating agent. The perovskite (CH<sub>3</sub&...
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MDPI AG
2025-03-01
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| author | Lakshmi Praba Yoseob Chung Dong Ho Han Jae Woong Jung |
| author_facet | Lakshmi Praba Yoseob Chung Dong Ho Han Jae Woong Jung |
| author_sort | Lakshmi Praba |
| collection | DOAJ |
| description | We herein report the enhanced electrical properties of self-powered perovskite-based photodetectors with high sensitivity and responsivity by applying the surface passivation strategy using C<sub>60</sub> (fullerene) as a surface passivating agent. The perovskite (CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>) thin film passivated with fullerene achieves a highly uniform and compact surface, showing reduced leakage current and higher photon-to-current conversion capability. As a result, the improved film quality of the perovskite layer allows excellent photon-detecting properties, including high values of external quantum efficiency (>95%), responsivity (>5 A W<sup>−1</sup>), and specific detectivity (<i>></i>10<sup>13</sup> Jones) at zero bias voltage, which surpasses those of the pristine perovskite-based device. Furthermore, the passivated device showed fast rise (0.18 μs) and decay times (17 μs), demonstrating high performance and ultrafast light-detecting capability of the self-powered perovskite-based photodetectors. |
| format | Article |
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| institution | DOAJ |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj-art-4eaa8cb2b4ae4f91a4f9bd339f15515f2025-08-20T02:59:00ZengMDPI AGMolecules1420-30492025-03-01305116610.3390/molecules30051166Fullerene-Passivated Methylammonium Lead Iodide Perovskite Absorber for High-Performance Self-Powered Photodetectors with Ultrafast Response and Broadband DetectivityLakshmi Praba0Yoseob Chung1Dong Ho Han2Jae Woong Jung3Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si 446-701, Republic of KoreaDepartment of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si 446-701, Republic of KoreaDepartment of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si 446-701, Republic of KoreaDepartment of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si 446-701, Republic of KoreaWe herein report the enhanced electrical properties of self-powered perovskite-based photodetectors with high sensitivity and responsivity by applying the surface passivation strategy using C<sub>60</sub> (fullerene) as a surface passivating agent. The perovskite (CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>) thin film passivated with fullerene achieves a highly uniform and compact surface, showing reduced leakage current and higher photon-to-current conversion capability. As a result, the improved film quality of the perovskite layer allows excellent photon-detecting properties, including high values of external quantum efficiency (>95%), responsivity (>5 A W<sup>−1</sup>), and specific detectivity (<i>></i>10<sup>13</sup> Jones) at zero bias voltage, which surpasses those of the pristine perovskite-based device. Furthermore, the passivated device showed fast rise (0.18 μs) and decay times (17 μs), demonstrating high performance and ultrafast light-detecting capability of the self-powered perovskite-based photodetectors.https://www.mdpi.com/1420-3049/30/5/1166perovskitephotodetectorspassivationdefect densityresponsivitydetectivity |
| spellingShingle | Lakshmi Praba Yoseob Chung Dong Ho Han Jae Woong Jung Fullerene-Passivated Methylammonium Lead Iodide Perovskite Absorber for High-Performance Self-Powered Photodetectors with Ultrafast Response and Broadband Detectivity Molecules perovskite photodetectors passivation defect density responsivity detectivity |
| title | Fullerene-Passivated Methylammonium Lead Iodide Perovskite Absorber for High-Performance Self-Powered Photodetectors with Ultrafast Response and Broadband Detectivity |
| title_full | Fullerene-Passivated Methylammonium Lead Iodide Perovskite Absorber for High-Performance Self-Powered Photodetectors with Ultrafast Response and Broadband Detectivity |
| title_fullStr | Fullerene-Passivated Methylammonium Lead Iodide Perovskite Absorber for High-Performance Self-Powered Photodetectors with Ultrafast Response and Broadband Detectivity |
| title_full_unstemmed | Fullerene-Passivated Methylammonium Lead Iodide Perovskite Absorber for High-Performance Self-Powered Photodetectors with Ultrafast Response and Broadband Detectivity |
| title_short | Fullerene-Passivated Methylammonium Lead Iodide Perovskite Absorber for High-Performance Self-Powered Photodetectors with Ultrafast Response and Broadband Detectivity |
| title_sort | fullerene passivated methylammonium lead iodide perovskite absorber for high performance self powered photodetectors with ultrafast response and broadband detectivity |
| topic | perovskite photodetectors passivation defect density responsivity detectivity |
| url | https://www.mdpi.com/1420-3049/30/5/1166 |
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