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Paper Abstract and Keywords
Presentation 2020-11-26 11:35
Examination of GaN-based photodetectors for optical wireless power transmission system
Kosuke Yamamoto, Pradip Dalapati, Takashi Egawa, Makoto Miyoshi (NIT) ED2020-5 CPM2020-26 LQE2020-56
Abstract (in Japanese) (See Japanese page) 
(in English) Aiming at a high-efficiency photodetectors for the optical wireless power transmission system consisting of semiconductor light-emitting devices and photodetectors, a photodetector epi-structure employing GaN/GaInN-MQWs was grown by metalorganic chemical vapor deposition (MOCVD) on c-plane sapphire. Then, the epitaxial structure, spectral sensitivity and photo-electrical characteristics were evaluated. The maximum external quantum efficiency (EQE) was measured to be 74% at a wavelength of 382 nm, and the short-circuit current density of 1.14 mA/cm2, open-circuit voltage of 2.23 V and energy conversion efficiency of 32% was obtained at a 382-nm-wavelength light irradiation with a light power of 5mW/cm2. While there still are a few issues regarding shunt and series resistances, further improvement in enegry efficiency might be obtained under higher-power light irradiation.
Keyword (in Japanese) (See Japanese page) 
(in English) GaInN-MQW / MOCVD / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 256, LQE2020-56, pp. 17-20, Nov. 2020.
Paper # LQE2020-56 
Date of Issue 2020-11-19 (ED, CPM, LQE) 
ISSN Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ED2020-5 CPM2020-26 LQE2020-56

Conference Information
Committee LQE CPM ED  
Conference Date 2020-11-26 - 2020-11-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To LQE 
Conference Code 2020-11-LQE-CPM-ED 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Examination of GaN-based photodetectors for optical wireless power transmission system 
Sub Title (in English)  
Keyword(1) GaInN-MQW  
Keyword(2) MOCVD  
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1st Author's Name Kosuke Yamamoto  
1st Author's Affiliation Nagoya Institute of Technology (NIT)
2nd Author's Name Pradip Dalapati  
2nd Author's Affiliation Nagoya Institute of Technology (NIT)
3rd Author's Name Takashi Egawa  
3rd Author's Affiliation Nagoya Institute of Technology (NIT)
4th Author's Name Makoto Miyoshi  
4th Author's Affiliation Nagoya Institute of Technology (NIT)
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Speaker Author-1 
Date Time 2020-11-26 11:35:00 
Presentation Time 20 minutes 
Registration for LQE 
Paper # ED2020-5, CPM2020-26, LQE2020-56 
Volume (vol) vol.120 
Number (no) no.254(ED), no.255(CPM), no.256(LQE) 
Page pp.17-20 
#Pages 4 
Date of Issue 2020-11-19 (ED, CPM, LQE) 

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