Picture of UK Houses of Parliament

Leading national thinking on politics, government & public policy through Open Access research

Strathprints makes available scholarly Open Access content by researchers in the School of Government & Public Policy, based within the Faculty of Humanities & Social Sciences.

Research here is 1st in Scotland for research intensity and spans a wide range of domains. The Department of Politics demonstrates expertise in understanding parties, elections and public opinion, with additional emphases on political economy, institutions and international relations. This international angle is reflected in the European Policies Research Centre (EPRC) which conducts comparative research on public policy. Meanwhile, the Centre for Energy Policy provides independent expertise on energy, working across multidisciplinary groups to shape policy for a low carbon economy.

Explore the Open Access research of the School of Government & Public Policy. Or explore all of Strathclyde's Open Access research...

Hybrid GaN LED with capillary-bonded II–VI MQW color-converting membrane for visible light communications

Santos, Joao M M and Jones, Brynmor E and Schlosser, Peter J and Watson, Scott and Herrnsdorf, Johannes and Guilhabert, Benoit and Mckendry, Jonathan and De Jesus, Joel and Garcia, Thor A and Tamargo, Maria C and Kelly, Anthony E and Hastie, Jennifer E and Laurand, Nicolas and Dawson, Martin D (2015) Hybrid GaN LED with capillary-bonded II–VI MQW color-converting membrane for visible light communications. Semiconductor Science and Technology, 30 (3). ISSN 0268-1242

PDF (Santos-etal-SST-2015-Hybrid-gan-led-with-capillary-bonded)
Accepted Author Manuscript

Download (652kB)| Preview


    The rapid emergence of gallium-nitride (GaN) light-emitting diodes (LEDs) for solid-state lighting has created a timely opportunity for optical communications using visible light. One important challenge to address this opportunity is to extend the wavelength coverage of GaN LEDs without compromising their modulation properties. Here, a hybrid source for emission at 540 nm consisting of a 450 nm GaN micro-sized LED (micro-LED) with a micron-thick ZnCdSe/ZnCdMgSe multi-quantum-well color-converting membrane is reported. The membrane is liquid-capillary-bonded directly onto the sapphire window of the micro-LED for full hybridization. At an injection current of 100 mA, the color-converted power was found to be 37 μW. At this same current, the −3 dB optical modulation bandwidth of the bare GaN and hybrid micro-LEDs were 79 and 51 MHz, respectively. The intrinsic bandwidth of the color-converting membrane was found to be power-density independent over the range of the micro-LED operation at 145 MHz, which corresponds to a mean carrier lifetime of 1.9 ns.