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Ligand assisted growth of perovskite single crystals with low defect density

Author

Listed:
  • Ye Liu

    (University of North Carolina
    University of Nebraska-Lincoln)

  • Xiaopeng Zheng

    (University of Nebraska-Lincoln)

  • Yanjun Fang

    (University of Nebraska-Lincoln)

  • Ying Zhou

    (University of North Carolina)

  • Zhenyi Ni

    (University of North Carolina)

  • Xun Xiao

    (University of North Carolina)

  • Shangshang Chen

    (University of North Carolina)

  • Jinsong Huang

    (University of North Carolina)

Abstract

A low defect density in metal halide perovskite single crystals is critical to achieve high performance optoelectronic devices. Here we show the reduction of defect density in perovskite single crystals grown by a ligand-assisted solution process with 3‐(decyldimethylammonio)‐propane‐sulfonate inner salt (DPSI) as an additive. DPSI ligands anchoring with lead ions on perovskite crystal surfaces not only suppress nucleation in solution, but also regulate the addition of proper ions to the growing surface, which greatly enhances the crystal quality. The grown CH3NH3PbI3 crystals show better crystallinity and a 23-fold smaller trap density of 7 × 1010 cm−3 than the optimized control crystals. The enhanced material properties result in significantly suppressed ion migration and superior X-ray detection sensitivity of CH3NH3PbI3 detectors of (2.6 ± 0.4) × 106 µC Gy−1air cm−2 for 60 kVp X-ray and the lowest detectable dose rate reaches (5.0 ± 0.7) nGy s−1, which enables reduced radiation dose to patients in medical X-ray diagnostics.

Suggested Citation

  • Ye Liu & Xiaopeng Zheng & Yanjun Fang & Ying Zhou & Zhenyi Ni & Xun Xiao & Shangshang Chen & Jinsong Huang, 2021. "Ligand assisted growth of perovskite single crystals with low defect density," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21934-6
    DOI: 10.1038/s41467-021-21934-6
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    Cited by:

    1. Chao Ge & Yachao Li & Haiying Song & Qiyuan Xie & Leilei Zhang & Xiaoran Ma & Junfeng Liu & Xiangjing Guo & Yinzhou Yan & Danmin Liu & Wenkai Zhang & Shibing Liu & Yang Liu, 2024. "Anisotropic carrier dynamics and laser-fabricated luminescent patterns on oriented single-crystal perovskite wafers," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Da Liu & Yichu Zheng & Xin Yuan Sui & Xue Feng Wu & Can Zou & Yu Peng & Xinyi Liu & Miaoyu Lin & Zhanpeng Wei & Hang Zhou & Ye-Feng Yao & Sheng Dai & Haiyang Yuan & Hua Gui Yang & Shuang Yang & Yu Hou, 2024. "Universal growth of perovskite thin monocrystals from high solute flux for sensitive self-driven X-ray detection," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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