Depletion width engineering via surface modification for high performance semiconducting piezoelectric nanogenerators

KY Lee, J Bae, SM Kim, JH Lee, GC Yoon, MK Gupta… - Nano Energy, 2014 - Elsevier
Piezoelectric semiconductor materials have emerged as the most attractive material for
nanogenerator (NG)-based prototype applications, such as piezotronics, piezophotonics …

Optimizing the efficiency of gallium nitride‐based light‐emitting diodes from contact area of current spreading to electrode

A Shaari, FA Ahmad Fajri… - Microwave and …, 2021 - Wiley Online Library
A nonuniform current spreading in the current spreader layer greatly reduced the internal
quantum efficiency (IQE) of the light‐emitting diodes (LED). The effects of the current …

The vertical-cavity surface-emitting laser as a sensing device

M Marciniak, Ł Piskorski, M Gębski, M Dems… - Journal of Lightwave …, 2018 - opg.optica.org
We show that a change to the quality (Q) factor of a laser diode cavity affects the electrical
properties of the device. The mechanism is demonstrated experimentally and numerically …

Numerical study of surface charge effects on a pn junction model system: Modulation of junction potential, band diagrams, and recombinations

SM Kim, JW Ha, H Kim, JB Kim - Integrated Ferroelectrics, 2016 - Taylor & Francis
We theoretically investigate the surface charge effects on a pn junction model system. It is
calculated that the polarity of the surface charges around the junction interface induces …