| Presentation | 2012-11-30 Approaches for improving efficiency of AlGaN-based deep-UV LEDs Yuji TOMITA, Hideki HIRAYAMA, Sachie FUJIKAWA, Katsuya MIZUSAWA, Shiro TOYODA, Norihiko KAMATA, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A connected-pillar AlN buffer structure fabricated on sapphire substrate is considered to be quite effective for increasing efficiency of AlGaN based deep-ultraviolet (DUV) LEDs, because of improving internal quantum efficiency (IQE) due to reduced threading-dislocation density (TDD), and light-extraction efficiency (LEE). In this study, we demonstrated the fabrication of connected-pillar AlN structure buffer on patterned-sapphire substrates (PSS) by using an 'NH_3 pulsed flow multi-layer growth' method and an epitaxial lateral overgrowth (ELO). We obtained output power of 5.5mW from 265nm AlGaN-based DUV-LED fabricated on connected-pillar AlN buffer on PSS under room temperature CW operation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DUV-LED / MOCVD / AlN / AlGaN / Connected pillar |
| Paper # | ED2012-84,CPM2012-141,LQE2012-112 |
| Date of Issue |
| Conference Information | |
| Committee | LQE |
|---|---|
| Conference Date | 2012/11/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Lasers and Quantum Electronics (LQE) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Approaches for improving efficiency of AlGaN-based deep-UV LEDs |
| Sub Title (in English) | |
| Keyword(1) | DUV-LED |
| Keyword(2) | MOCVD |
| Keyword(3) | AlN |
| Keyword(4) | AlGaN |
| Keyword(5) | Connected pillar |
| 1st Author's Name | Yuji TOMITA |
| 1st Author's Affiliation | Saitama University() |
| 2nd Author's Name | Hideki HIRAYAMA |
| 2nd Author's Affiliation | RIKEN |
| 3rd Author's Name | Sachie FUJIKAWA |
| 3rd Author's Affiliation | RIKEN |
| 4th Author's Name | Katsuya MIZUSAWA |
| 4th Author's Affiliation | Saitama University |
| 5th Author's Name | Shiro TOYODA |
| 5th Author's Affiliation | Saitama University |
| 6th Author's Name | Norihiko KAMATA |
| 6th Author's Affiliation | Saitama University |
| Date | 2012-11-30 |
| Paper # | ED2012-84,CPM2012-141,LQE2012-112 |
| Volume (vol) | vol.112 |
| Number (no) | 329 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |