Cesium Lead Bromide (CsPbBr3) Thin‐Film‐Based Solid‐State Neutron Detector Developed by a Solution‐Free Sublimation Process
Abstract
The majority of solid‐state radiation sensors are predominantly single crystals. However, for low‐cost and large‐area device applications, thin films are a better option. The first evidence of neutron detection using a Gallium Oxide/Cesium Lead Bromide (Ga2O3/CsPbBr3) solid‐state diode enabled by an innovative close space sublimation (CSS) method that allows deposition of thick CsPbBr3 films is demonstrated. Furthermore, indirect neutron sensing is achieved using a 10B layer for diodes biased at voltages as low as –5 V, showing the potential for low‐power operation. The neutron response is enabled by the low leakage current (≈10−8 A mm–2), rectification of ≈104, capacitance as low as 15 pF, and fast response of the Ga2O3/CsPbBr3 diode. The superior performance of the CsPbBr3 is due to the phase purity, stoichiometry control, and large single‐grain columnar growth of the films obtained by the CSS method.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 11, 2020
- Source ID
- 10.1002/admt.202000534
Entities
People
- Carlos Ávila-Avendaño
- Iker Rodrigo Chavez‐urbiola
- Joseph Chang
- Leunam Fernandez‐izquierdo
- Lidia El Bouanani
- Manuel A Quevedo-Lopez
- Maria Isabel Pintor‐Monroy
- Martin Gregorio Reyes‐Banda
- Nini Rose Mathews
- Xavier Mathew
Organizations
- Air Force Office of Scientific Research
- National Autonomous University of Mexico
- University of Texas at Dallas