scholarly journals Should A Good Organic Solar Cell Be A Good Organic LED?

2020 ◽  
Author(s):  
Gregory Kozyreff ◽  
Blaise Godefroid
Keyword(s):  
Solar Cell ◽  
Electric Current ◽  
Organic Solar Cell ◽  
Bulk Heterojunction ◽  
General Rule ◽  
Cell Efficiency ◽  
Exciton Transport

We revisit the argument that link the efficiency of a solar cell to its reverse operation as a LED, in the case where the material is organic. In organic cells, exciton transport is an intermediate process between sunlight absorption and the generation of electric current. We show that quenching exciton radiation can be beneficial to cell efficiency, without contradicting the general rule prevailing for semiconductor cells. Our treatment allows us to discuss both bulk heterojunction and planar junctions.

scholarly journals Bulk Heterojunction Organic Solar Cell Area-Dependent Parameter Fluctuation

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
A. J. Trindade ◽  
L. Pereira
Keyword(s):  
Solar Cell ◽  
Organic Solar Cell ◽  
Bulk Heterojunction ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Active Area ◽  
Device Structure ◽  
Cell Efficiency ◽  
Area Increase

Organic solar cell efficiency is known to be active area dependent and is usually a problem in the upscale factor for market applications. In this work, a detailed study of organic photovoltaic devices with active layer based on poly(3-hexylthiophene) (P3HT) and 1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6)C61 (PCBM) is made, evaluating the effect of the change on the active area from 10−2 to 4 cm4. The device structure was kept simple in order to allow the understanding of the physical effects involved. Device figures of merit were extracted from the equivalent circuit using a genetic-based algorithm, and their relationship with the active area was compared. It is observed that the efficiency drops significantly with the active area increase (as the fill factor) while the parallel and series resistance, adjusted to the active area, seems to be relatively constant and increases linearly, respectively. The short circuit current and the generated photocurrent also drop significantly with the active area increase. The open circuit voltage does not show major changes. These results are discussed considering the main influences for the observed efficiency data. Particularly, as the basic circuit model seems to fail to explain the macroscopic results, the behavior can be related with the enlargement of defect interaction.

Influence of morphological tuned nanostructure hybrid layers on efficient bulk heterojunction organic solar cell and X-ray detector performances

2021 ◽  
Vol 543 ◽  
pp. 148863
Author(s):  
Dhanasekaran Vikraman ◽  
Hailiang Liu ◽  
Sajjad Hussain ◽  
K. Karuppasamy ◽  
Hae-Kyung Youi ◽  
...  
Keyword(s):  
Solar Cell ◽  
Organic Solar Cell ◽  
Bulk Heterojunction ◽  
X Ray ◽  
Hybrid Layers

Modifications in Morphology Resulting from Nanoimprinting Bulk Heterojunction Blends for Light Trapping Organic Solar Cell Designs

2013 ◽  
Vol 5 (16) ◽  
pp. 8225-8230 ◽  
Author(s):  
John R. Tumbleston ◽  
Abay Gadisa ◽  
Yingchi Liu ◽  
Brian A. Collins ◽  
Edward T. Samulski ◽  
...  
Keyword(s):  
Solar Cell ◽  
Organic Solar Cell ◽  
Bulk Heterojunction ◽  
Light Trapping

Effective oxygen plasma treatment on indium tin oxide electrode to improve organic solar cell efficiency

2011 ◽  
Vol 209 (2) ◽  
pp. 369-372 ◽  
Author(s):  
Fu-Ching Tang ◽  
Jay Chang ◽  
Wei-Yang Chou ◽  
Horng-Long Cheng ◽  
Steve Lien-Chung Hsu ◽  
...  
Keyword(s):  
Solar Cell ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Organic Solar Cell ◽  
Oxygen Plasma ◽  
Oxygen Plasma Treatment ◽  
Oxide Electrode ◽  
Indium Tin Oxide Electrode ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

Enhancement of organic solar cell efficiency by altering the zinc oxide photoanode nanostructure morphology

2021 ◽  
Author(s):  
Zahra Samavati ◽  
Alireza Samavati ◽  
Ahmad Fauzi Ismail ◽  
Tohid N. Borhani ◽  
Mohammad Velashjerdi ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Solar Cell ◽  
Organic Solar Cell ◽  
Solar Cell Efficiency ◽  
Cell Efficiency

Increasing Polymer Solar Cell Active Layer Efficiency and Organization by Adding Gold-Functionalized Reduced Graphene Oxide

2013 ◽  
Vol 1500 ◽  
Author(s):  
Rebecca Isseroff ◽  
Andrew Chen ◽  
Sneha Chittabathini ◽  
Alexandra Tse ◽  
Cheng Pan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solar Cell ◽  
Reduced Graphene Oxide ◽  
Active Layer ◽  
Bulk Heterojunction ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Reduced Graphene ◽  
Polymer Component ◽  
Low Efficiency

ABSTRACTRelatively low efficiency is one of the main obstacles to overcome in the engineering of organic bulk heterojunction (BHJ) solar cells. Reduced graphene oxide (RGO), which has high conductivity, has been proposed to enhance the function of PCBM in the interfacial dissociation of excitons, but incorporating it into the hydrophobic photoactive polymers has proved challenging. Here we describe a novel technique for incorporating Au nanoparticles (AuNp) into the structure of the RGO. The AuNps then interact with the sulfur groups on the photoactive polymer component, while the RGO interacts via π – π stacking with the chemically similar PCBM, thereby anchoring the complex to the polymer interface. Graphene oxide was synthesized and then reduced in the presence of a gold salt. The resulting gold-functionalized RGO (AuRGO) sheets were characterized using TGA, FTIR, and TEM. The AuRGO was not soluble in chlorobenzene; however, in the presence of P3HT, the AuRGO dissolved, suggesting a reaction between the gold and the sulfur of the P3HT via a metal-thiolate bond. At 2 mg/ml, AuRGO increased the solar cell efficiency approximately 50% over the control, but higher concentrations produced large, columnar structures which blocked the electrode from having a uniform contact with the active layer.

Review: Fullerene based acceptors for efficient bulk heterojunction organic solar cell applications

2017 ◽  
Vol 161 ◽  
pp. 102-148 ◽  
Author(s):  
Ramasamy Ganesamoorthy ◽  
Govindasamy Sathiyan ◽  
Pachagounder Sakthivel
Keyword(s):  
Solar Cell ◽  
Organic Solar Cell ◽  
Bulk Heterojunction

A built-in electric field induced by ferroelectrics increases halogen-free organic solar cell efficiency in various device types

Nano Energy ◽  
2020 ◽  
Vol 68 ◽  
pp. 104327 ◽  
Author(s):  
Tanya Kumari ◽  
Sungwoo Jung ◽  
Yongjoon Cho ◽  
Hwang-Pill Kim ◽  
Jae Won Lee ◽  
...  
Keyword(s):  
Solar Cell ◽  
Electric Field ◽  
Organic Solar Cell ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Halogen Free
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