Recombination Suppression in PbS Quantum Dot Heterojunction Solar Cells by Energy-Level Alignment in the Quantum Dot Active Layers

2017 ◽  
Vol 10 (31) ◽  
pp. 26142-26152 ◽  
Author(s):  
Chao Ding ◽  
Yaohong Zhang ◽  
Feng Liu ◽  
Naoki Nakazawa ◽  
Qingxun Huang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Quantum Dot ◽  
Recombination Suppression ◽  
Heterojunction Solar Cells ◽  
Active Layers ◽  
Energy Level Alignment ◽  
Pbs Quantum Dot

scholarly journals How the Charge-Neutrality Level of Interface States Controls Energy Level Alignment in Cathode Contacts of Organic Bulk-Heterojunction Solar Cells

ACS Nano ◽  
2012 ◽  
Vol 6 (4) ◽  
pp. 3453-3460 ◽  
Author(s):  
Antonio Guerrero ◽  
Luís F. Marchesi ◽  
Pablo P. Boix ◽  
Sonia Ruiz-Raga ◽  
Teresa Ripolles-Sanchis ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Bulk Heterojunction ◽  
Interface States ◽  
Charge Neutrality ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Charge Neutrality Level ◽  
Energy Level Alignment

scholarly journals Annealing-Temperature Dependent Carrier-Transportation in ZnO/PbS Quantum Dot Solar Cells Fabricated Using Liquid-Phase Ligand Exchange Methods

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5037
Author(s):  
Akihiro Takahashi ◽  
Haibin Wang ◽  
Takeshi Fukuda ◽  
Norihiko Kamata ◽  
Takaya Kubo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Liquid Phase ◽  
Quantum Dot ◽  
Active Layer ◽  
Ligand Exchange ◽  
Carrier Transport ◽  
Annealing Temperature ◽  
Defect States ◽  
Heterojunction Solar Cells ◽  
Pbs Quantum Dot

We constructed ZnO/PbS quantum dot (QD) heterojunction solar cells using liquid-phase ligand exchange methods. Colloidal QD solutions deposited on ZnO-dense layers were treated at different temperatures to systematically study how thermal annealing temperature affected carrier transport properties. The surface of the layers became dense and smooth as the temperature approached approximately 80 °C. The morphology of layers became rough for higher temperatures, causing large grain-forming PbS QD aggregation. The number of defect states in the layers indicated a valley-shaped profile with a minimum of 80 °C. This temperature dependence was closely related to the amount of residual n-butylamine complexes in the PbS QD layers and the active layer morphology. The resulting carrier diffusion length obtained on the active layers treated at 80 °C reached approximately 430 nm. The solar cells with a 430-nm-thick active layer produced a power conversion efficiency (PCE) of 11.3%. An even higher PCE is expected in solar cells fabricated under optimal annealing conditions.

Energy Level Alignment in CdS Quantum Dot Sensitized Solar Cells Using Molecular Dipoles

2009 ◽  
Vol 131 (29) ◽  
pp. 9876-9877 ◽  
Author(s):  
Menny Shalom ◽  
Sven Rühle ◽  
Idan Hod ◽  
Shay Yahav ◽  
Arie Zaban
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Quantum Dot ◽  
Cds Quantum Dot ◽  
Energy Level Alignment ◽  
Sensitized Solar Cells

Energy Level Alignment and Morphology of Ag and Au Nanoparticle Recombination Contacts in Tandem Planar Heterojunction Solar Cells

2013 ◽  
Vol 117 (43) ◽  
pp. 22331-22340 ◽  
Author(s):  
K. Xerxes Steirer ◽  
Gordon A. MacDonald ◽  
Selina Olthof ◽  
Jeremy Gantz ◽  
Erin L. Ratcliff ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Au Nanoparticle ◽  
Heterojunction Solar Cells ◽  
Energy Level Alignment ◽  
Planar Heterojunction Solar Cells ◽  
Planar Heterojunction
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