Established facile preparation technology of silicon nanoparticles based solar cells and improved power conversion efficiency by formation of optimal photoelectric conversion

2016 Fiscal Year Final Research Report

• Project/Area Number: 26390105
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: General applied physics
• Research Institution: Tokyo Denki University
• Principal Investigator: Sato Keisuke 東京電機大学, 工学部, 准教授 (70366384)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: シリコンナノ構造体 / 量子ドット / 有機材料 / 複合材料 / 不純物ドーピング / 化学的合成法 / 太陽電池 / エネルギー変換効率

Outline of Final Research Achievements

Silicon (Si) nanoparticles-based solar cells have been attracting significant attention because of the possession of greater advantages such as low production cost of the solar cells. In this research project, we develop hybrid solar cells that combine impurity (i.e., phosphorus (P) or boron (B))-doped Si nanostructures with conducting organic polymers so as to reduce the production cost and improve the power conversion efficiency (PCE). We have succeed in establishing the impurity-doping, surface-passivation and size-control techniques of Si nanostructures, and also facile preparation technique of impurity-doped Si nanostructures-based solar cells. Additionally, the hybrid solar cells combining the P-doped Si nanostructures with the polymers attained a higher PCE compared to the hybrid solar cells combining the B-doped Si nanostructures with the polymers. From this result, we constructed optimal photoelectric conversion layer in hybrid solar cells, which can improve the PCE.

Free Research Field

ナノ多機能材料創製