https://scholars.lib.ntu.edu.tw/handle/123456789/606991
Title: | Analysis of Size-Dependent Quantum Efficiency in AlGaInP Micro-Light-Emitting Diodes with Consideration for Current Leakage | Authors: | Li Y.-Y Lin F.-Z Chi K.-L Weng S.-Y Lee G.-Y Kuo H.-C Lin C.-C. CHIEN-CHUNG LIN |
Keywords: | Display;leakage current;light-emitting diode;quantum well device;radiative recombination;Aluminum alloys;Efficiency;Gallium alloys;III-V semiconductors;Indium alloys;Leakage currents;Light;Light emitting diodes;Passivation;Photovoltaic cells;Quantum efficiency;Semiconductor alloys;Semiconductor quantum wells;Solar cells;Cell chips;Current leakage;Faster rates;Lightemitting diode;Quantum well device;Radiative recombination;Semiconductor device measurements;Size dependent;Photoelectrochemical cells | Issue Date: | 2022 | Journal Volume: | 14 | Journal Issue: | 1 | Source: | IEEE Photonics Journal | Abstract: | This study fabricated and analyzed AlGaInP-based red micro-light-emitting diodes (LEDs) ranging from 2 to 15 μm in size. To collect photons from a single micro-LED at this scale, a solar cell chip near the micro-LEDs was used. Quantum efficiency decreased at a faster rate than that predicted by the standard ABC model under high currents, and a leakage current component was added to fully describe this phenomenon. The modified model can be used to extract valuable information regarding the micro-LEDs, such as the Shockley-Read-Hall coefficient. A size dependency analysis revealed that the bulk Shockley-Read-Hall coefficient and surface recombination velocity of the micro-LEDs were 6.81 × 107 1/sec and 5.99 × 104 cm/sec, respectively. Further analysis of the size-dependent recombination effect can help us solve the side wall problem and maximize the light output of AlGaInP-based micro-LEDs for ultrahigh-resolution displays. ? 2009-2012 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122306946&doi=10.1109%2fJPHOT.2021.3138946&partnerID=40&md5=df89ed4867d8ae8b9213452dd2a43c40 https://scholars.lib.ntu.edu.tw/handle/123456789/606991 |
ISSN: | 19430655 | DOI: | 10.1109/JPHOT.2021.3138946 | SDG/Keyword: | [SDGs]SDG7 |
Appears in Collections: | 電機工程學系 |
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