Realization of a lattice-match-free hybrid mirror for organic semiconductor lasers

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K13768
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Organic and hybrid materials
• Research Institution: Yamagata University
• Principal Investigator: Daisuke Yokoyama 山形大学, 大学院有機材料システム研究科, 准教授 (00518821)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 有機半導体レーザ / 多層膜ミラー / 屈折率 / 垂直共振器表面発光型レーザ / VCSEL / 有機半導体 / 無機酸化物半導体

Outline of Final Research Achievements

To realize current-excitation organic laser devices, it is necessary to overcome problems of lack of injected current density and optical-confinement efficiency. In this study, we focused on the structure of vertical cavity surface emitting laser (VCSEL) and tried to fabricate a high-conduction and high-reflectance lattice-match-free multilayer mirror as a component for laser devices by vacuum co-deposition of amorphous organic and inorganic materials with a smooth surface. Using mixed co-deposited films with an organic semiconductor, dopant, and fluorine resin, we realized a conductive multilayer mirror with the reflectance of 96% and average electrical conductivity of 2.4×10E-8 S/cm.

Free Research Field

有機半導体デバイス