Realization of phosphor free white LED for lighting

2014 Fiscal Year Final Research Report

• Project/Area Number: 24686003
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Applied materials science/Crystal engineering
• Research Institution: Meijo University
• Principal Investigator: IWAYA Motoaki 名城大学, 理工学部, 准教授 (40367735)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 白色LED / 貼りあわせ技術 / プラズモン / ナノ構造 / 光取り出し効率 / 緑色LED

Outline of Final Research Achievements

In this study, we examined for the realization of phosphor-free nitride semiconductor-based white light-emitting diodes (LED). In order to realize these devices, we examined as follows,
1. Increase of luminescence efficiency of nitride-based green LED due to a plasmon effect by using an Ag fine particles. 2. We confirmed that moth-eye structure (nano-structure) and the multilayer reflector have realized the increase of light extraction efficiency. 3. We developed the wafer bonding technology with direct and using ITO light transparent electrode by ion irradiation.

Free Research Field

半導体工学