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Volume 33 Issue 2
Apr 2019
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Chinese Journal of High Pressure Physics  > 2019  >  33(2): 020101.
JIANG Hongmei, CAO Ye, YANG Songrui, MA Zhiwei, FU Ruijing, SHI Yue, XIAO Guanjun. Band Gap Modulation of Orthorhombic Cesium Lead Iodide Perovskite Nanorods under High Pressure[J]. Chinese Journal of High Pressure Physics, 2019, 33(2): 020101. doi: 10.11858/gywlxb.20190711
Citation: JIANG Hongmei, CAO Ye, YANG Songrui, MA Zhiwei, FU Ruijing, SHI Yue, XIAO Guanjun. Band Gap Modulation of Orthorhombic Cesium Lead Iodide Perovskite Nanorods under High Pressure[J]. Chinese Journal of High Pressure Physics, 2019, 33(2): 020101. doi: 10.11858/gywlxb.20190711
shu

Band Gap Modulation of Orthorhombic Cesium Lead Iodide Perovskite Nanorods under High Pressure

doi: 10.11858/gywlxb.20190711

  • State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China

  • Received Date: 16 Jan 2019
  • Rev Recd Date: 01 Mar 2019
  • Issue Publish Date: 25 Jun 2019
    Abstract
  • The all-inorganic halide perovskite is a promising photoelectric material because of its strong stability and good optical properties. However, it is still a key problem to effectively design the band gap to meet the practical application requirements. By controlling the reaction time and temperature, the morphology of cesium-lead-iodine (CsPbI3) nano-material could be controlled, and the rod-like CsPbI3 nano-material with uniform morphology and good crystallinity was synthesized. The band gap changes of CsPbI3 nanorods under high pressure were further studied by using diamond pair anvil and in situ high pressure ultraviolet-visible absorption spectroscopy. It is found that the band gap of CsPbI3 nanorods decreases under high pressure, and the tunable band gap lays the foundation for the application of nano-materials in the field of photovoltaic cells. The results can not only help to establish the structural properties of CsPbI3 nanorods on the atomic scale. It also provides an important clue for the practical application of all-inorganic perovskite nano-materials.

     

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