Related Experiment Video
Updated: Jan 27, 2026

Fabrication of Schottky Diodes on Zn-polar BeMgZnO/ZnO Heterostructure Grown by Plasma-assisted Molecular Beam Epitaxy
Published on: October 23, 2018
Raman determination of carrier concentration in ZnO-based heterostructure light-emitting diodes
Abstract:
Understanding of the carrier concentration properties of current spreading layers in LED devices is important although difficult to achieve. Here, we present a solution to determine the carrier concentration for current spreading layers in ZnO-based LEDs, based on Raman spectroscopy. Raman spectra and lineshape fitting indicate a hole concentration below 1×1018 cm-3 in the p-type region and an electron concentration of 1.21×1019 cm-3 in n-type. The results from Raman spectroscopy are further qualitatively confirmed by the electroluminescence spectrum and device simulation, which demonstrates its possible application in carrier concentration assessment in multilayered structures.
More Related Videos
07:44Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes
Published on: November 16, 2018
11:04An In-House-Built and Light-Emitting-Diode-Based Photodynamic Therapy Device for Enhancing Verteporfin Cytotoxicity in a 2D Cell Culture Model
Published on: January 13, 2023
Related Concept Videos
Electron Carriers
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
Zener Diodes
The Ideal Diode
Diode: Forward bias
The behavior of a diode in forward bias...
Carrier Transport
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations