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A thin transferable blue light-emitting diode by electrochemical lift-off
Nano Express, Volume: 1, Issue: 2, Start page: 020033
Swansea University Author: Yaonan Hou
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DOI (Published version): 10.1088/2632-959x/abb07d
Abstract
We demonstrate a transferable blue light-emitting diode (LED) fabricated using a cost-effective approach. By means of solution-based electrochemical etching, an ultrathin free-standing membrane can be obtained from a commercial III-nitride LED wafer. The membrane, containing a full LED structure (in...
| Published in: | Nano Express |
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| ISSN: | 2632-959X |
| Published: |
IOP Publishing
2020
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa65287 |
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| Abstract: |
We demonstrate a transferable blue light-emitting diode (LED) fabricated using a cost-effective approach. By means of solution-based electrochemical etching, an ultrathin free-standing membrane can be obtained from a commercial III-nitride LED wafer. The membrane, containing a full LED structure (including p-/n-type layers and multiple quantum wells) epitaxially grown on a sapphire substrate, is transferable to foreign substrates with a simple lift-off process facilitated by electrochemical etching. After fabrication, optical properties of the thin film are massively improved, accompanied by a 17-fold enhanced photoluminescence normal to the film surface. Prototype transferable blue LEDs are realized on both a copper-coated glass substrate and a polypropylene substrate. The devices exhibit a high performance with bright emission at 447 nm under electrical injection at room temperature. |
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| Keywords: |
light-emittingdiode, transferableoptoelectronics, lightextractionefficiency, GaN |
| College: |
Faculty of Science and Engineering |
| Funders: |
TheresearchsupportedbyQiluYongScholarshipProgramme,ShandongUniversity,China;andpartly supportedbythe1000YouthTalentProgrammeofChina. |
| Issue: |
2 |
| Start Page: |
020033 |