File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1364/AO.57.002452
- Scopus: eid_2-s2.0-85044822120
- PMID: 29714220
- WOS: WOS:000428998400031
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Packaging of InGaN stripe-shaped light-emitting diodes
Title | Packaging of InGaN stripe-shaped light-emitting diodes |
---|---|
Authors | |
Issue Date | 2018 |
Publisher | OSA. The Journal's web site is located at http://ao.osa.org/journal/ao/about.cfm |
Citation | Applied Optics, 2018, v. 57 n. 10, p. 2452-2458 How to Cite? |
Abstract | We demonstrate the fabrication of InGaN/GaN stripe-shaped light-emitting diodes (LEDs) in flip-chip packaging (FC-LED) and vertically mounted packaging (VM-LED). Compared to conventionally packaged LEDs, these packaging schemes enhance light output and emission divergence in ways favorable for general lighting applications. The FC-LED can sustain efficiency at high current operations due to effective heat sinking, while the VM-LED excels at light extraction efficiency due to the exposure of two large emission surfaces. Together with the properties of low luminous exitance and emission uniformity, the stripe-shaped LEDs are ideal for the assembly of luminaires. An LED light tube comprising a continuous linear array of 10 stripe-shaped LED chips has been assembled. The optical performance of the light tube is compared to another light tube assembled with conventional square-shaped LED chips (with and without external diffuser) by confocal microscopy. It is found that emission uniformity of the stripe-shaped LED tube is significantly improved, with a threefold increase in illumination area, without efficiency loss associated with diffusers. |
Persistent Identifier | http://hdl.handle.net/10722/259278 |
ISSN | 2023 Impact Factor: 1.7 2023 SCImago Journal Rankings: 0.487 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Y | - |
dc.contributor.author | Li, KH | - |
dc.contributor.author | Fu, WY | - |
dc.contributor.author | Cheung, YF | - |
dc.contributor.author | Choi, HW | - |
dc.date.accessioned | 2018-09-03T04:04:20Z | - |
dc.date.available | 2018-09-03T04:04:20Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Applied Optics, 2018, v. 57 n. 10, p. 2452-2458 | - |
dc.identifier.issn | 1559-128X | - |
dc.identifier.uri | http://hdl.handle.net/10722/259278 | - |
dc.description.abstract | We demonstrate the fabrication of InGaN/GaN stripe-shaped light-emitting diodes (LEDs) in flip-chip packaging (FC-LED) and vertically mounted packaging (VM-LED). Compared to conventionally packaged LEDs, these packaging schemes enhance light output and emission divergence in ways favorable for general lighting applications. The FC-LED can sustain efficiency at high current operations due to effective heat sinking, while the VM-LED excels at light extraction efficiency due to the exposure of two large emission surfaces. Together with the properties of low luminous exitance and emission uniformity, the stripe-shaped LEDs are ideal for the assembly of luminaires. An LED light tube comprising a continuous linear array of 10 stripe-shaped LED chips has been assembled. The optical performance of the light tube is compared to another light tube assembled with conventional square-shaped LED chips (with and without external diffuser) by confocal microscopy. It is found that emission uniformity of the stripe-shaped LED tube is significantly improved, with a threefold increase in illumination area, without efficiency loss associated with diffusers. | - |
dc.language | eng | - |
dc.publisher | OSA. The Journal's web site is located at http://ao.osa.org/journal/ao/about.cfm | - |
dc.relation.ispartof | Applied Optics | - |
dc.title | Packaging of InGaN stripe-shaped light-emitting diodes | - |
dc.type | Article | - |
dc.identifier.email | Li, KH: khli@eee.hku.hk | - |
dc.identifier.email | Fu, WYG: wyfu@hku.hk | - |
dc.identifier.email | Cheung, YF: yukfaira@hku.hk | - |
dc.identifier.email | Choi, HW: hwchoi@hku.hk | - |
dc.identifier.authority | Li, KH=rp02142 | - |
dc.identifier.authority | Choi, HW=rp00108 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1364/AO.57.002452 | - |
dc.identifier.pmid | 29714220 | - |
dc.identifier.scopus | eid_2-s2.0-85044822120 | - |
dc.identifier.hkuros | 288871 | - |
dc.identifier.volume | 57 | - |
dc.identifier.issue | 10 | - |
dc.identifier.spage | 2452 | - |
dc.identifier.epage | 2458 | - |
dc.identifier.eissn | 2155-3165 | - |
dc.identifier.isi | WOS:000428998400031 | - |
dc.identifier.issnl | 1559-128X | - |