Kilogram‐Scale Crystallogenesis of Halide Perovskites for Gamma‐Rays Dose Rate Measurements
Abstract Gamma‐rays (γ‐rays), wherever present, e.g., in medicine, nuclear environment, or homeland security, due to their strong impact on biological matter, should be closely monitored. There is a need for simple, sensitive γ‐ray detectors at affordable prices. Here, it is shown that γ‐ray detecto...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202001882 |
| _version_ | 1828057708770623488 |
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| author | Pavao Andričević Pavel Frajtag Vincent Pierre Lamirand Andreas Pautz Márton Kollár Bálint Náfrádi Andrzej Sienkiewicz Tonko Garma László Forró Endre Horváth |
| author_facet | Pavao Andričević Pavel Frajtag Vincent Pierre Lamirand Andreas Pautz Márton Kollár Bálint Náfrádi Andrzej Sienkiewicz Tonko Garma László Forró Endre Horváth |
| author_sort | Pavao Andričević |
| collection | DOAJ |
| description | Abstract Gamma‐rays (γ‐rays), wherever present, e.g., in medicine, nuclear environment, or homeland security, due to their strong impact on biological matter, should be closely monitored. There is a need for simple, sensitive γ‐ray detectors at affordable prices. Here, it is shown that γ‐ray detectors based on crystals of methylammonium lead tribromide (MAPbBr3) ideally meet these requirements. Specifically, the γ‐rays incident on a MAPbBr3 crystal generates photocarriers with a high mobility‐lifetime product, allowing radiation detection by photocurrent measurements at room temperatures. Moreover, the MAPbBr3 crystal‐based detectors, equipped with improved carbon electrodes, can operate at low bias (≈1.0 V), hence being suitable for applications in energy‐sparse environments, including space. The γ‐ray detectors reported herein are exposed to radiation from a 60Co source at dose rates up to 2.3 Gy h−1 under ambient conditions for over 100 h, without any sign of degradation. The excellent radiation tolerance stems from the intrinsic structural plasticity of the organic–inorganic halide perovskites, which can be attributed to a defect‐healing process by fast ion migration at the nanoscale level. The sensitivity of the γ‐ray detection upon volume is tested for MAPbBr3 crystals reaching up to 1000 cm3 (3.3 kg in weight) grown by a unique crystal growth technique. |
| first_indexed | 2024-04-10T21:16:30Z |
| format | Article |
| id | doaj.art-92233f93ecbc471fb90fc6ebcb08d609 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-10T21:16:30Z |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-92233f93ecbc471fb90fc6ebcb08d6092023-01-20T12:20:39ZengWileyAdvanced Science2198-38442021-01-0182n/an/a10.1002/advs.202001882Kilogram‐Scale Crystallogenesis of Halide Perovskites for Gamma‐Rays Dose Rate MeasurementsPavao Andričević0Pavel Frajtag1Vincent Pierre Lamirand2Andreas Pautz3Márton Kollár4Bálint Náfrádi5Andrzej Sienkiewicz6Tonko Garma7László Forró8Endre Horváth9Laboratory of Physics of Complex Matter (LPMC) Ecole Polytechnique Fédérale de Lausanne Centre Est, Station 3 Lausanne CH‐1015 SwitzerlandLaboratory of Reactor Physics and Systems Behaviour Ecole Polytechnique Fédérale de Lausanne Centre Est, Station 3 Lausanne CH‐1015 SwitzerlandLaboratory of Reactor Physics and Systems Behaviour Ecole Polytechnique Fédérale de Lausanne Centre Est, Station 3 Lausanne CH‐1015 SwitzerlandLaboratory of Reactor Physics and Systems Behaviour Ecole Polytechnique Fédérale de Lausanne Centre Est, Station 3 Lausanne CH‐1015 SwitzerlandLaboratory of Physics of Complex Matter (LPMC) Ecole Polytechnique Fédérale de Lausanne Centre Est, Station 3 Lausanne CH‐1015 SwitzerlandLaboratory of Physics of Complex Matter (LPMC) Ecole Polytechnique Fédérale de Lausanne Centre Est, Station 3 Lausanne CH‐1015 SwitzerlandLaboratory of Physics of Complex Matter (LPMC) Ecole Polytechnique Fédérale de Lausanne Centre Est, Station 3 Lausanne CH‐1015 SwitzerlandPower Engineering Department Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture University of Split Ulica Ruđera Boškovića 32 Split 21000 CroatiaLaboratory of Physics of Complex Matter (LPMC) Ecole Polytechnique Fédérale de Lausanne Centre Est, Station 3 Lausanne CH‐1015 SwitzerlandLaboratory of Physics of Complex Matter (LPMC) Ecole Polytechnique Fédérale de Lausanne Centre Est, Station 3 Lausanne CH‐1015 SwitzerlandAbstract Gamma‐rays (γ‐rays), wherever present, e.g., in medicine, nuclear environment, or homeland security, due to their strong impact on biological matter, should be closely monitored. There is a need for simple, sensitive γ‐ray detectors at affordable prices. Here, it is shown that γ‐ray detectors based on crystals of methylammonium lead tribromide (MAPbBr3) ideally meet these requirements. Specifically, the γ‐rays incident on a MAPbBr3 crystal generates photocarriers with a high mobility‐lifetime product, allowing radiation detection by photocurrent measurements at room temperatures. Moreover, the MAPbBr3 crystal‐based detectors, equipped with improved carbon electrodes, can operate at low bias (≈1.0 V), hence being suitable for applications in energy‐sparse environments, including space. The γ‐ray detectors reported herein are exposed to radiation from a 60Co source at dose rates up to 2.3 Gy h−1 under ambient conditions for over 100 h, without any sign of degradation. The excellent radiation tolerance stems from the intrinsic structural plasticity of the organic–inorganic halide perovskites, which can be attributed to a defect‐healing process by fast ion migration at the nanoscale level. The sensitivity of the γ‐ray detection upon volume is tested for MAPbBr3 crystals reaching up to 1000 cm3 (3.3 kg in weight) grown by a unique crystal growth technique.https://doi.org/10.1002/advs.202001882dosimetryoperational stabilityperovskite gamma detectionrecord crystal sizeself‐healing |
| spellingShingle | Pavao Andričević Pavel Frajtag Vincent Pierre Lamirand Andreas Pautz Márton Kollár Bálint Náfrádi Andrzej Sienkiewicz Tonko Garma László Forró Endre Horváth Kilogram‐Scale Crystallogenesis of Halide Perovskites for Gamma‐Rays Dose Rate Measurements Advanced Science dosimetry operational stability perovskite gamma detection record crystal size self‐healing |
| title | Kilogram‐Scale Crystallogenesis of Halide Perovskites for Gamma‐Rays Dose Rate Measurements |
| title_full | Kilogram‐Scale Crystallogenesis of Halide Perovskites for Gamma‐Rays Dose Rate Measurements |
| title_fullStr | Kilogram‐Scale Crystallogenesis of Halide Perovskites for Gamma‐Rays Dose Rate Measurements |
| title_full_unstemmed | Kilogram‐Scale Crystallogenesis of Halide Perovskites for Gamma‐Rays Dose Rate Measurements |
| title_short | Kilogram‐Scale Crystallogenesis of Halide Perovskites for Gamma‐Rays Dose Rate Measurements |
| title_sort | kilogram scale crystallogenesis of halide perovskites for gamma rays dose rate measurements |
| topic | dosimetry operational stability perovskite gamma detection record crystal size self‐healing |
| url | https://doi.org/10.1002/advs.202001882 |
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