[15p-K402-1~9] 12.8 Specific theme: Photoelectric Properties, Device Fabrication and Structural Controls of Organic-Inorganic Hybrid Perovskites

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[15p-K402-6] Research on improving the performance of blue-emitting perovskite nanocrystals by
sodium borohydride

〇(M2)Mao Goto¹, Naoaki Oshita¹, Satoshi Asakura², Akito Masuhara^1,3 (1.Grad. Sch. of Sci. and Eng., Yamagata Univ., 2.Ise Chem. Corp., 3.FROM, Yamagata Univ.)

Keywords:

perovskite nanocrystals,sodium borohydride,photoluminesence quantum yield

Blue-emitting perovskite nanocrystals (PeNCs) face the critical challenge of low photoluminescence quantum yield (PLQY) due to defect formation. In this study, we successfully synthesized blue-emitting PeNCs by adding sodium borohydride (NaBH₄) into the precursor solution. The addition of NaBH₄ decomposed moisture in the solvent, thereby eliminating factors that promote defect formation. Furthermore, incorporating Na⁺, which has high lattice energy, effectively suppressed defect formation in the PeNCs. These combined strategies enabled the fabrication of blue-emitting PeNCs with significantly enhanced PLQY.