Broadband-absorbing hybrid solar cells with efficiency greater than 3% based on a bulk heterojunction of PbS quantum dots and a low-bandgap polymer

2014 ◽  
Vol 2 (11) ◽  
pp. 3978 ◽  
Author(s):  
Minwoo Nam ◽  
Joongpil Park ◽  
Sang-Wook Kim ◽  
Keekeun Lee
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Bulk Heterojunction ◽  
Hybrid Solar Cells ◽  
Low Bandgap ◽  
Pbs Quantum Dots

scholarly journals Enhancement of the photovoltaic performance in P3HT: PbS hybrid solar cells using small size PbS quantum dots

2014 ◽  
Vol 116 (9) ◽  
pp. 094305 ◽  
Author(s):  
Yuliar Firdaus ◽  
Erwin Vandenplas ◽  
Yolanda Justo ◽  
Robert Gehlhaar ◽  
David Cheyns ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Photovoltaic Performance ◽  
Hybrid Solar Cells ◽  
Pbs Quantum Dots

scholarly journals Enhanced Device Performance of Bulk Heterojunction (BHJ) Hybrid Solar Cells Based on Colloidal CdSe Quantum Dots (QDs) via Optimized Hexanoic Acid-Assisted Washing Treatment

2019 ◽  
Vol 2019 ◽  
pp. 1-6 ◽  
Author(s):  
Alfian F. Madsuha ◽  
Akhmad H. Yuwono ◽  
Nofrijon Sofyan ◽  
Michael Krueger
Keyword(s):  
Quantum Dots ◽  
Surface Modification ◽  
Solar Cells ◽  
Solar Cell ◽  
Electron Transport ◽  
Bulk Heterojunction ◽  
Hexanoic Acid ◽  
Cdse Quantum Dots ◽  
Hybrid Solar Cells ◽  
Solar Cell Application

As-synthesized colloidal quantum dots (QDs) are usually covered by an organic capping ligand. These ligands provide colloidal stability by preventing QDs agglomeration. However, their inherent electrical insulation properties deliver a problem for hybrid solar cell application, disrupting charge transfer, and electron transport in conjugated polymer/QDs photoactive blends. Therefore, a surface modification of QDs is crucial before QDs are integrated into solar cell fabrication. In this work, enhancement of power conversion efficiency (PCE) in bulk heterojunction (BHJ) hybrid solar cells based on hexadecylamine- (HDA-) capped CdSe quantum dots (QDs) has been achieved via a postsynthetic hexanoic acid washing treatment. The investigation of the surface modification was performed to find the optimum of washing time and their effect on solar cell devices performance. Variation of washing time between 16 and 30 min has been conducted, and an optimum washing time was found at 22 min, resulting in a high PCE of 2.81%. The efficiency enhancement indicates improved electron transport, contributing in an increased short-circuit current density of solar cell devices.

Improving Charge Transport in PbS Quantum Dot to Al:ZnO Layer by Changing the Size of Quantum Dots in Hybrid Solar Cells

2016 ◽  
Vol 71 (11) ◽  
pp. 1067-1071
Author(s):  
Masood Mehrabian ◽  
Parinaz Abdollahian
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Short Circuit ◽  
Visible Region ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Hybrid Solar Cells ◽  
Photovoltaic Properties ◽  
Photovoltaic Applications ◽  
Pbs Quantum Dots

AbstractPbS Quantum dots and P3HT are promising materials for photovoltaic applications due to their absorption in the NIR and visible region, respectively. Our previous experimental work showed that doping Al to ZnO lattice (Al:ZnO) could efficiently improve the cell performance. In this article, hybrid solar cells containing of two active areas with ITO/Al:ZnO/PbS QDs/P3HT&PCBM/Ag structure were fabricated and the effect of PbS QD size on photovoltaic properties was investigated. Optimised solar cell showed maximum power conversion efficiency of 2.45 % with short-circuit current of 9.36 mA/cm2 and open-circuit voltage of 0.59 V under 1 sun illumination (AM1.5).

scholarly journals Improved efficiency of bulk heterojunction hybrid solar cells by utilizing CdSe quantum dot–graphene nanocomposites

2014 ◽  
Vol 16 (24) ◽  
pp. 12251-12260 ◽  
Author(s):  
Michael Eck ◽  
Chuyen Van Pham ◽  
Simon Züfle ◽  
Martin Neukom ◽  
Martin Sessler ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Solar Cells ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Cdse Quantum Dots ◽  
Hybrid Solar Cells ◽  
Graphene Nanocomposites ◽  
Reduced Graphene ◽  
Cdse Quantum Dot

The incorporation of nanocomposites from CdSe quantum dots and thiolated reduced graphene oxide into bulk hetrojunction hybrid solar cells increases the power conversion efficiency.

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