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Paper Abstract and Keywords
Presentation 2021-11-25 16:55
Evaluation of PV performance of GaInN besed photovoltaic cells under monochromatic light illumination for optical wireless power transmission system
Taiki Nakabayashi, Kousuke Yamamoto, Pradip Dalapati, Takashi Egawa, Makoto Miyoshi (NIT) ED2021-27 CPM2021-61 LQE2021-39
Abstract (in Japanese) (See Japanese page) 
(in English) GaInN-based photovoltaic (PV) devices are highly promising for application to optical wireless power transmission (OWPT) systems as well as solar cells. In this study, we attempted to improve the diode I-V characteristics focusing on improving the quality of epitaxial films employing GaInN-MQWs as a PV device for optical wireless power transmission systems. As a result of the MOCVD study, the epilayer qualities in the PV cell improved significantly through the adoption of an optimized growth temperature for the GaInN MQWs and of the two-step growth for the top p-GaN layers. Furthermore, the improved epilayer qualities resulted in the decrease in carrier recombination currents and series resistance for the forward diode characteristics without a light illumination. Accordingly, sample with the improved qualities exhibited a high open-circuit voltage and a high fill factor in the PV characteristics. Eventually, the highest power conversion efficiency (PCE) was measured to be 42.7% at a monochromatic light illumination with 389 nm in wavelength and 5 mW cm−2 in optical power density. The dependency of the PV performance on the optical power densities at monochromatic lights predicted that a higher PCE value may be achievable at a higher optical-power-density illumination.
Keyword (in Japanese) (See Japanese page) 
(in English) GaInN-MQW / MOCVD / OWPT system / / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 261, LQE2021-39, pp. 59-62, Nov. 2021.
Paper # LQE2021-39 
Date of Issue 2021-11-18 (ED, CPM, LQE) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
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 ED2021-27 CPM2021-61 LQE2021-39

Conference Information
Committee ED CPM LQE  
Conference Date 2021-11-25 - 2021-11-26 
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 2021-11-ED-CPM-LQE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of PV performance of GaInN besed photovoltaic cells under monochromatic light illumination for optical wireless power transmission system 
Sub Title (in English)  
Keyword(1) GaInN-MQW  
Keyword(2) MOCVD  
Keyword(3) OWPT system  
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1st Author's Name Taiki Nakabayashi  
1st Author's Affiliation Nagoya Institute of Technology (NIT)
2nd Author's Name Kousuke Yamamoto  
2nd Author's Affiliation Nagoya Institute of Technology (NIT)
3rd Author's Name Pradip Dalapati  
3rd Author's Affiliation Nagoya Institute of Technology (NIT)
4th Author's Name Takashi Egawa  
4th Author's Affiliation Nagoya Institute of Technology (NIT)
5th Author's Name Makoto Miyoshi  
5th Author's Affiliation Nagoya Institute of Technology (NIT)
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Speaker Author-1 
Date Time 2021-11-25 16:55:00 
Presentation Time 25 minutes 
Registration for LQE 
Paper # ED2021-27, CPM2021-61, LQE2021-39 
Volume (vol) vol.121 
Number (no) no.259(ED), no.260(CPM), no.261(LQE) 
Page pp.59-62 
#Pages 4 
Date of Issue 2021-11-18 (ED, CPM, LQE) 

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