Nitride micro-LEDs and beyond - a decade progress review

Abstract

Since their inception, micro-size light emitting diode (µLED) arrays based on III-nitride semiconductors have emerged as a promising technology for a range of applications. This paper provides an overview on a decade progresses on realizing III-nitride µLED based high voltage single-chip AC/DC-LEDs without power converters to address the key compatibility issue between LEDs and AC power grid infrastructure; and high-resolution solid-state self-emissive microdisplays operating in an active driving scheme to address the need of high brightness, efficiency and robustness of microdisplays. These devices utilize the photonic integration approach by integrating µLED arrays on-chip. Other applications of nitride µLED arrays are also discussed.

Effects of indium doping on the crystallographic, morphological, electrical, and optical properties of highly crystalline ZnO films

“…Moreover, for more device applications based on wide-band-gap semiconductors with intrinsic n-type carriers (e.g., GaN, ZnO etc. ), an ntype layer is always deposited first, and is as the substrate of the following deposition of multiple quantum wells and a p-type layer [7]. The crystalline quality and the control of the n-type doping level are thus of great importance and the highly doped amorphous films cannot be used completely.…”

Analysis of HVPE grown AlGaN layers on honeycomb patterned sapphire

“…Nitride semiconductors have been proven to be useful for various optoelectronic applications in the wavelength range from 230 nm to 550 nm [1][2][3]. Using the Al x Ga 1À x N material system, devices working in the wavelength region from UV-A to UV-C are accessible.…”

Digitally Controlled Micro-LED Array for Linear Visible Light Communication Systems

“…The architecture of micro-LED array is shown in [16] with each element controlled by individual circuits. The modulation bandwidth increase of the micro-LED array can potentially increase the transmission data rate of the VLC by 10 times.…”