Hybrid Doping in Quantum Dot-Based Functional Nanomaterials

2020 Fiscal Year Final Research Report

• Project/Area Number: 18K14092
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 28030:Nanomaterials-related
• Research Institution: Kobe University
• Principal Investigator: SUGIMOTO Hiroshi 神戸大学, 工学研究科, 助教 (40793998)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Keywords: 量子ドット / コロイド / 半導体

Outline of Final Research Achievements

This project aims at the further exploration of the optical functionality of semiconductor quantum dots by developing a hybrid approach of substitutional doping and chemical doping. By performing detail structural and optical studies on boron and phosphorus codoped silicon quantum dots developed by our group, the effect of substitutional doping on the excess carriers inside quantum dots and energy level structure are investigated. In addition, the chemical doping is successfully demonstrated using molecular reductant and the photocatalytic reaction that cannot be achieved by solely substitutional doping, is demonstrated.

Free Research Field

ナノ材料科学

Academic Significance and Societal Importance of the Research Achievements

本研究は、これまでにない「ドーピングによる量子ドットの新たな光機能開拓」を実現したものであり、学術的意義に富んでいる。また、本研究で示したドーピングによる量子ドットの光機能の向上・開拓は、光電子デバイス・バイオ分野における応用研究に波及するものであり、社会的意義は大きい。