The vertical-cavity-surface-emitting laser(VCSEL) which operate at 1.55 or 1.3 um has been recognized as a key device in optical interconnection systems and parallel optical processing. However, the realization of these long-wavelength VCSELs with a low threshold current has long been delayed due to… More

Due to a mature material growth and processing technology of InP and InGaAs, lattice-mismatched 2.5 um(0.55 ev )InGaAs/InP is identified as the most promising Thermophotovoltaic(TPV) material system for the next generation of monolithic interconnected modules(MIMs). Compared to GaSb and quaternary… More

High-performance, low cost monolithic radio-frequency integrated circuits (RFIC) have many applications for ARMY, other DOD components, and commercial site. The need for RFIC operating in the high mm-wave range stresses the current GaAs based PHEMTtechnology to its limits, and has spurred… More

As future demands are made for higher efficiency (30+ %), improved Watt/weight (1000 W/kg), it is clear that new approach that combine best attribute of crystalline and thin film solar cells to achieve 1000 W/kg is needed. ELI propose to develop (1) Inverted structure of InGaP (1.8 ev)/GaAs (1.4… More

ELI has recently produced ~16% AM0 efficiency crack-free flexible solar cells. We also developed over 25% AM0 efficiency thin film solar cell technology. As future demands are made for higher efficiency, improved Watt/weight, Watt/area, Watt/cost, it is clear that the current approaches should be… More

Anticipated future space-based mission capabilities will include high-powered platforms supporting high-bandwidth communication. To supply power to these missions higher efficiency solar cells can reduce the mass, area, stowed volume and the cost of the solar arrays. ELI propose to develop Ultra… More

ELI has recently produced ~16% AM0 efficiency flexible solar cells. We also developed over 25% AM0 efficiency thin film solar cell technology. As future demands are made for higher efficiency, improved Watt/weight, Watt/area, Watt/cost, it is clear that the current approaches should be improved to… More

This STTR phase I project aims to develop a novel material system for muti-Watt level, Room Temperature 3.0 to 3.5 micron Quantum Cascade Lasers (QCLs) utilizing our state-of-art in house Mod Gen II molecular beam epitaxy (MBE) system. Due to their bi-polar nature and the exponentially increasing… More