Development of Halide Perovskite Single Crystal for Radiation Detection Applications

Abstract

Preface: Recently, low-cost perovskite single crystals have attracted intensive attention due to their excellent optoelectronic properties and improved stability when compared to polycrystalline films for various applications, such as solar cells (

Toward Efficient and Stable Perovskite Solar Cells by 2D Interface Energy Band Alignment

“…These results indicate that the perovskite sacrifices part of the vertical orientation and makes a more uniform crystallographic orientation, which improved the perovskite film quality and reduced the density of trapped states; this lays a foundation for the high stability of perovskite film. [ 38–40 ] Furthermore, by comparing the q ‐dependent 1D‐GIXRD spectrum around the perovskite (110) peak in Figure 1d, two (110) diffraction peaks at q ≈ 10.0 nm −1 showed similar symmetrical intensity distributions (shown in Figure 1e), which proves that a highly crystalline film with high phase purity was formed in both cases. Besides, as shown in Figure S3 (Supporting Information), the contact angles of bare and BACl:PbI 2 ‐modified SnO 2 films are measured to be 59.6° and 20.7°, respectively.…”

Metal Halide Perovskites for High‐Energy Radiation Detection

“…Inorganic -ray scintillating materials such as GSO:Ce and LSO:Ge satisfy several of these requirements but often suffer from long decay times (≈40 ns). To this end, hybrid materials [50,138,140] offer short decay times but are generally unstable with a low material density (1 g cm −3 ). Thus, the development of materials that address these challenges is urgently required for further advancing the various imaging technologies.…”

Gamma‐Ray Detection Using Bi‐Poor Cs2AgBiBr6 Double Perovskite Single Crystals

“…Gamma‐ray detection plays an important role in a wide range of applications including homeland security, national defense, medical imaging, industrial monitoring, environmental survey, non‐destructive inspection, and basic scientific research. [ 1–4 ] In this regard, semiconductor‐based gamma‐ray detectors are especially appealing due to their high sensitivity and excellent detection efficiency. The high‐purity germanium (HPGe) detectors can offer ultrahigh energy resolution (≈0.3% for 662 keV gamma‐ray).…”

“…In recent years, perovskite materials have emerged as new promising materials for ionizing radiation detection due to their unique advantages, such as suitable bandgap energy, high average atomic number Z, high resistivity, large mobility–lifetime product, and low cost using solution growth methods. [ 1,7,2,3,8 ] In 2016, Yakunin et al. first demonstrated that the solution‐grown formamidinium (FA)‐based hybrid lead halide perovskites, FAPbI 3 , could achieve radiation response to gamma photons.…”

“…As a result, there is a strong need to search for new gamma-ray detector materials with attractive device performance and competitive fabrication cost.In recent years, perovskite materials have emerged as new promising materials for ionizing radiation detection due to their unique advantages, such as suitable bandgap energy, high average atomic number Z, high resistivity, large mobility-lifetime product, and low cost using solution growth methods. [1,7,2,3,8] In 2016, Yakunin et al first demonstrated that the solution-grown formamidinium (FA)-based hybrid lead halide perovskites, FAPbI 3 , could achieve radiation response to gamma photons. [8] In 2017, Wei et al reported the energyresolving gamma spectrum of Cs-137 isotope using alloyed hybrid perovskites CH 3 NH 3 PbBr 2.94 Cl 0.06 single crystals (SCs).…”