High-performance germanium quantum dot photodetectors in the visible and near infrared

S Siontas, D Li, H Wang, A Aravind, A Zaslavsky… - Materials Science in …, 2019 - Elsevier
We present our work on high performance germanium (Ge) quantum dot (QD)
photodetectors (PDs), fabricated on Si and Ge substrates, that operate via tunneling …

Ge nanoparticles in SiO2 for near infrared photodetectors with high performance

I Stavarache, VS Teodorescu, P Prepelita… - Scientific Reports, 2019 - nature.com
In this work we prepared films of amorphous germanium nanoparticles embedded in SiO2
deposited by magnetron sputtering on Si and quartz heated substrates at 300, 400 and 500° …

High-efficiency silicon-compatible photodetectors based on Ge quantum dots

S Cosentino, P Liu, ST Le, S Lee, D Paine… - Applied Physics …, 2011 - pubs.aip.org
We report on high responsivity, broadband metal/insulator/semiconductor photodetectors
with amorphous Ge quantum dots (a-Ge QDs) as the active absorbers embedded in a silicon …

Fast and efficient germanium quantum dot photodetector with an ultrathin active layer

S Shi, D Pacifici, A Zaslavsky - Applied Physics Letters, 2021 - pubs.aip.org
An ultrathin layer (13 nm) of germanium (Ge) quantum dots embedded in a SiO 2 matrix was
deposited on a Ge substrate for photodetection in both the visible and near-infrared (IR) …

[หนังสือ][B] Silicon, germanium, and their alloys: growth, defects, impurities, and nanocrystals

G Kissinger, S Pizzini - 2014 - books.google.com
Despite the vast knowledge accumulated on silicon, germanium, and their alloys, these
materials still demand research, eminently in view of the improvement of knowledge on …

SiGe based visible-NIR photodetector technology for optoelectronic applications

YR Puri, H Efstathiadis, P Haldar - Advances in Optical Fiber …, 2015 - books.google.com
This chapter covers recent advances in SiGe based detector technology, including device
operation, fabrication processes, and various optoelectronic applications. Optical sensing …

Direct evaluation of the quantum confinement effect in single isolated Ge nanocrystals

O Millo, I Balberg, D Azulay, TK Purkait… - The journal of …, 2015 - ACS Publications
To address the yet open question regarding the nature of quantum confinement in Ge
nanocrystals (Ge NCs) we employed scanning tunneling spectroscopy to monitor the …

Investigation of structural and optical properties of Ge/Al2O3 multilayer thin films fabricated using electron beam evaporation

K Shekhawat, D Negi, R Shyam, P Vashishtha… - Journal of Crystal …, 2023 - Elsevier
The present work reports the structural, optical, and luminescence properties of Ge/Al 2 O 3
multilayers prepared using electron beam evaporation followed by conventional furnace …

Ge/Si core/shell quantum dots in alumina: tuning the optical absorption by the core and shell size

N Nekić, J Sancho-Parramon… - …, 2017 - degruyter.com
Ge/Si core/shell quantum dots (QDs) recently received extensive attention due to their
specific properties induced by the confinement effects of the core and shell structure. They …

Transient photoresponse and incident power dependence of high-efficiency germanium quantum dot photodetectors

P Liu, S Cosentino, ST Le, S Lee, D Paine… - Journal of Applied …, 2012 - pubs.aip.org
We report a systematic study of time-resolved and power-dependent photoresponse in high-
efficiency germanium quantum dot photodetectors (Ge-QD PDs), with internal quantum …