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Highly ordered lead-free double perovskite halides by design

Journal of Materiomics, ISSN: 2352-8478, Vol: 6, Issue: 4, Page: 651-660
2020
  • 38
    Citations
  • 0
    Usage
  • 48
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    38
    • Citation Indexes
      38
  • Captures
    48

Article Description

Lead-free double perovskite halides are emerging optoelectronic materials that are alternatives to lead-based perovskite halides. Recently, single-crystalline double perovskite halides were synthesized, and their intriguing functional properties were demonstrated. Despite such pioneering works, lead-free double perovskite halides with better crystallinity are still in demand for applications to novel optoelectronic devices. Here, we realized highly crystalline Cs 2 AgBiBr 6 single crystals with a well-defined atomic ordering on the microscopic scale. We avoided the formation of Ag vacancies and the subsequent secondary Cs 3 Bi 2 Br 9 by manipulating the initial chemical environments in hydrothermal synthesis. The suppression of Ag vacancies allows us to reduce the trap density in the as-grown crystals and to enhance the carrier mobility further. Our design strategy is applicable for fabricating other lead-free halide materials with high crystallinity.

Bibliographic Details

Chang Won Ahn; Jae Hun Jo; Jong Chan Kim; Hamid Ullah; Sangkyun Ryu; Younghun Hwang; Jin San Choi; Jongmin Lee; Sanghan Lee; Hyoungjeen Jeen; Young-Han Shin; Hu Young Jeong; Ill Won Kim; Tae Heon Kim

Elsevier BV

Materials Science

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