Development of composite thin films exhibiting quantum confinement effects prepared by one-step synthesis method and their photovoltaic characteristic

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360295
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Research Institute for Electromagnetic Materials
• Principal Investigator: SEISHI Abe 公益財団法人電磁材料研究所, 光材料グループ, 主席研究員 (20202666)
• Co-Investigator(Kenkyū-buntansha): OBA Yojiro 国立大学法人京都大学, 原子炉実験所, 助教 (60566793) ; PING Dehai 独立行政法人物質, 材料研究機構・構造機能融合材料グループ, 主任研究員 (80354207)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 複合構造薄膜 / 量子サイズ効果 / 太陽電池 / ナノ粒子 / 無機

Outline of Final Research Achievements

This research project focuses on developing a new nanocomposite thin film by one-step synthesis method and exhibiting its photovoltaic characteristic. Specifically, we have found a nanocomposite thin film with isolated InSb nanocrystals with a grain size of 15nm embedded in phase-mixture matrix containing TiO2 and In2O3. PbTe-added ZnTe thin film forms nanocomposite with PbTe nanoparticles embedded in ZnTe matrix, phase-separating at a hetero-interface between the both. Furthermore, Ge-added TiO2 thin film deposited on a p-type Si substrate produces photocurrent at wavelength ranges of 300nm to 1200nm. It is therefore found that the thin films prepared by one-step synthesis method form nanocomposite structure and exhibits photovoltaic characteristic.

Free Research Field

工学