Abstract
Methylammonium lead bromide (CH3NH3PbBr3 or MAPB) perovskite semiconductors are a potential low-cost option for high energy resolution semiconductor detectors for gamma and neutron sensing. MAPB has recently been demonstrated for its ability to sense alpha particles and neutrons, and pertinent electronic properties have previously been reported. In this presentation, we report on several techniques of improving detector performance to achieve better spectroscopic performance for gamma sensing. These methods include anion and partial cation substitutions of MAPB to improve carrier transport and limit ionic conductivity and several surface treatment and metallization techniques for improved carrier extraction and minimization of device polarization.
| Original language | English |
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| Title of host publication | 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781728141640 |
| DOIs | |
| State | Published - Oct 2019 |
| Externally published | Yes |
| Event | 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019 - Manchester, United Kingdom Duration: Oct 26 2019 → Nov 2 2019 |
Publication series
| Name | 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019 |
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Conference
| Conference | 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019 |
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| Country/Territory | United Kingdom |
| City | Manchester |
| Period | 10/26/19 → 11/2/19 |
Funding
Manuscript received December 16, 2019. Part of this work was conducted in the Micro-Processing Research Facility, a University of Tennessee Core Facility. This material is based upon work supported by the U.S. Department of Homeland Security under grant no. 2016-DN-077-ARI01. Disclaimer: The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Department of Homeland Security.
Keywords
- Gamma detection
- MAPB
- MAPBbBr
- Perovskite