Quantum Dot/Carbon Nanotube Nanohybrids for Novel Nanostructured Photovoltaic Devices

2012 ◽  
Vol 1 (1) ◽  
pp. 22-39 ◽  
Author(s):  
Belete Atomsa Gonfa ◽  
My El Ali Khakani ◽  
Dongling Ma
Keyword(s):  
Carbon Nanotube ◽  
Quantum Dot ◽  
Photovoltaic Devices

scholarly journals Selective Doping of Quantum Dot Nanomaterials for Managing Intersubband Absorption, Dark Current, and Photoelectron Lifetime

MRS Advances ◽  
2017 ◽  
Vol 2 (14) ◽  
pp. 759-766 ◽  
Author(s):  
Kimberly Sablon ◽  
Andrei Sergeev ◽  
Xiang Zhang ◽  
Vladimir Mitin ◽  
Michael Yakimov ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Dark Current ◽  
Spectral Characteristics ◽  
Nonradiative Recombination ◽  
Photovoltaic Devices ◽  
Electron Population ◽  
Selective Doping ◽  
Intersubband Absorption ◽  
Novel Approach ◽  
N Doping

ABSTRACTNovel approach to optimize quantum dot (QD) materials for specific optoelectronic applications is based on engineering of nanoscale potential profile, which is created by charged QDs. The nanoscale barriers prevent capture of photocarriers and drastically increase the photoelectron lifetime, which in turn strongly improves the photoconductive gain, responsivity, and sensitivity of photodetectors and decreases the nonradiative recombination losses of photovoltaic devices. QD charging may be created by various types of selective doping. To investigate effects of selective doping, we model, fabricated, and characterized AlGaAs/InAs QD structures with n-doping of QD layers, doping of interdot layers, and bipolar doping, which combines p-doping of QD layers with strong n-doping of the interdot space. We have measured spectral characteristics of photoresponse, photocurrent and dark current. The experimental data show that providing the same electron population of QDs, the bipolar doping creates the most contrasting nanoscale profile with the highest barriers around dots.

Hybrid Single Walled Carbon Nanotube - Quantum Dot photosensors

2015 ◽  
Author(s):  
Simas Rackauskas ◽  
Andrei V. Alaferdov ◽  
Tatiana Rackauskas ◽  
Raluca Savu ◽  
Stanislav A. Moshkalev ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Quantum Dot ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon

scholarly journals Subgap spectroscopy of thermally excited quasiparticles in a Nb-contacted carbon nanotube quantum dot

2014 ◽  
Vol 89 (24) ◽  
Author(s):  
M. Gaass ◽  
S. Pfaller ◽  
T. Geiger ◽  
A. Donarini ◽  
M. Grifoni ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Quantum Dot

Thermal Imaging with Plasmon Resonance Enhanced HgTe Colloidal Quantum Dot Photovoltaic Devices

ACS Nano ◽  
2018 ◽  
Vol 12 (7) ◽  
pp. 7362-7370 ◽  
Author(s):  
Xin Tang ◽  
Matthew M. Ackerman ◽  
Philippe Guyot-Sionnest
Keyword(s):  
Quantum Dot ◽  
Plasmon Resonance ◽  
Thermal Imaging ◽  
Photovoltaic Devices ◽  
Colloidal Quantum Dot

A quantum dot sensitized solar cell based on vertically aligned carbon nanotube templated ZnO arrays

2010 ◽  
Vol 12 (10) ◽  
pp. 1432-1435 ◽  
Author(s):  
J. Chen ◽  
C. Li ◽  
D.W. Zhao ◽  
W. Lei ◽  
Y. Zhang ◽  
...  
Keyword(s):  
Solar Cell ◽  
Carbon Nanotube ◽  
Quantum Dot ◽  
Vertically Aligned

An Organic Hole Transport Layer Enhances the Performance of Colloidal PbSe Quantum Dot Photovoltaic Devices

2010 ◽  
Vol 20 (20) ◽  
pp. 3555-3560 ◽  
Author(s):  
Chih-Yin Kuo ◽  
Ming-Shin Su ◽  
Yu-Chien Hsu ◽  
Hui-Ni Lin ◽  
Kung-Hwa Wei
Keyword(s):  
Quantum Dot ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Photovoltaic Devices
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