Colloidal synthesis of all-inorganic tin-based perovskite quantum dots and their application for solar cells

2023 Fiscal Year Final Research Report

• Project/Area Number: 21H01743
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 28010:Nanometer-scale chemistry-related
• Research Institution: National Institute for Materials Science
• Principal Investigator: SUN Hong-tao 国立研究開発法人物質・材料研究機構, ナノアーキテクトニクス材料研究センター, 主幹研究員 (30571822)
• Co-Investigator(Kenkyū-buntansha): KHADKA Dhruba 国立研究開発法人物質・材料研究機構, エネルギー・環境材料研究センター, 主任研究員 (70793173)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: ナノ粒子

Outline of Final Research Achievements

The synthesis of all-inorganic tin halide perovskite nanocrystals was thoroughly investigated. The hot-injection and ion exchange approaches were adopted for the synthesis, and the detailed synthetic parameters affecting the size distribution and photophysical properties of nanocrystals were examined. Furthermore, resurfacing these nanocrystals was found to be a powerful strategy to passivate the surface defects. The potential and challenges for their application in solar cells were evaluated.

Free Research Field

ナノ構造化学関連

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、ハロゲン化スズペロブスカイトナノ結晶を設計・合成するための欠陥化学を理解することの重要性を浮き彫りにし、高品質なスズ系多結晶薄膜の作製に役立つ知見を提供する。これら知見が、ペロブスカイト太陽電池の安定性と毒性に関する懸念に対する解決策をもたらし、省エネルギー社会の構築に貢献することが期待される。