scholarly journals Effect of Spraying Parameters on the Morphology of Spray-Coated Active Layers for Organic Solar Cells

2018 ◽  
Vol 7 (3.18) ◽  
pp. 75
Author(s):  
Nur Tahirah Razali ◽  
Khairunisa Kamarudin ◽  
Shusei Inaba ◽  
Mahshuri Yusof ◽  
Yeng Weng Leong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Film Thickness ◽  
Organic Solar Cells ◽  
Spin Coating ◽  
Mass Production ◽  
Low Cost ◽  
Applied Pressure ◽  
Spray Coating ◽  
Processing Parameters ◽  
Line Production

Over the past decade, organic solar cells (OSCs) have demonstrated their great potential for the low-cost mass production of renewable energy.  However, the conventional active layer deposition technique (spin-coating) is not suitable for mass production due to its incompatibility with the roll-to-roll process. Spray-coating is a promising candidate for in-line production of OSCs but parameters such as distance between the spray nozzle and substrate, applied pressure and number of sprays should be optimized to produce adequate film thickness and morphology. Here, we verified how these processing parameters influence the thin film properties and observed that film thickness increases with decreasing nozzle-substrate distance, increasing number of sprays or applied pressure. The processing parameters were adjusted to produce spray-coated films with similar properties to the spin-coated ones thus confirming that spray-coating could replace spin-coating for mass production of OSC devices.  

scholarly journals Solution-Processed Chalcogenide Photovoltaic Thin Films

2021 ◽  
Author(s):  
Marcos Antonio Santana Andrade Junior ◽  
Hugo Leandro Sousa dos Santos ◽  
Mileny dos Santos Araujo ◽  
Arthur Corrado Salomão ◽  
Lucia Helena Mascaro
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Spin Coating ◽  
Low Cost ◽  
Spray Coating ◽  
Thin Film Solar Cells ◽  
Cost Ratio ◽  
Chalcogenide Thin Films ◽  
High Absorption Coefficient ◽  
Tunable Band Gap

Chalcogenides-based thin film solar cells are great competitors to beat high efficiencies as silicone solar cells. The chalcogenides that have been commonly used as absorber materials are CIS, CIGS, and CZTS. They present some advantages of having a direct and tunable band gap, high absorption coefficient and respectable efficiency to cost ratio. Solution processable deposition approaches for the fabrication of solar cells attracts a great deal attention due to its lower capital cost of the manufacturing than the vacuum-based techniques. In this chapter, we detail the use of a low-cost method of deposition for the chalcogenide thin films by spin-coating and spray-coating, which is already widely employed in several fields of industries.

scholarly journals Molecular design revitalizes the low-cost PTV-polymer for highly efficient organic solar cells

2021 ◽  
Author(s):  
Junzhen Ren ◽  
Pengqing Bi ◽  
Jianqi Zhang ◽  
Jiao Liu ◽  
Jingwen Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Molecular Design ◽  
Raw Materials ◽  
Low Cost ◽  
Stable Conformation ◽  
Chemical Structures ◽  
Aggregation Effect ◽  
Industrialization Process

Abstract Developing photovoltaic materials with simple chemical structures and easy synthesis still remains a major challenge in the industrialization process of organic solar cells (OSCs). Herein, an ester substituted poly(thiophene vinylene) derivative, PTVT-T, was designed and synthesized in very few steps by adopting commercially available raw materials. The ester groups on the thiophene units enable PTVT-T to have a planar and stable conformation. Moreover, PTVT-T presents a wide absorption band and strong aggregation effect in solution, which are the key characteristics needed to realize high performance in non-fullerene-acceptor (NFA)-based OSCs. We then prepared OSCs by blending PTVT-T with three representative fullerene- and NF-based acceptors, PC71BM, IT-4F and BTP-eC9. It was found that PTVT-T can work well with all the acceptors, showing great potential to match new emerging NFAs. Particularly, a remarkable power conversion efficiency of 16.20% is achieved in a PTVT-T:BTP-eC9-based device, which is the highest value among the counterparts based on PTV derivatives. This work demonstrates that PTVT-T shows great potential for the future commercialization of OSCs.

scholarly journals Synthesis and Theoretical Investigation Using DFT of 2,3-Diphenylquinoxaline Derivatives for Electronic and Photovoltaic Effects

2021 ◽  
Author(s):  
Dorota Zając ◽  
Dariusz Przybylski ◽  
Jadwiga Sołoducho
Keyword(s):  
Solar Cells ◽  
Acrylic Acid ◽  
Organic Semiconductors ◽  
Organic Solar Cells ◽  
Molecular Design ◽  
Low Cost ◽  
Design Synthesis ◽  
Semiconducting Properties ◽  
Homo Lumo

AbstractDeveloping effective and low‐cost organic semiconductors is an opportunity for the development of organic solar cells (OPV). Herein, we report the molecular design, synthesis and characterization of two molecules with D–A–D–A configuration: 2-cyano-3-(5-(8-(3,4-ethylenodioxythiophen-5-yl)-2,3-diphenylquinoxalin-5-yl)thiophen-2-yl)acrylic acid (6) and 2-cyano-3-(5-(2,3-diphenyl-8-(thiophen-2-yl)quinoxalin-5-yl)thiophen-2-yl)acrylic acid (7). Moreover, we investigated the structural, theoretical and optical properties. The distribution of HOMO/LUMO orbitals and the values of the ionization potential indicate good semiconducting properties of the compounds and that they can be a bipolar material. Also, the optical study show good absorption in visible light (λabs 380–550 nm). We investigate the theoretical optoelectronic properties of obtained compounds as potential materials for solar cells.

Over 13%‐Efficient Organic Solar Cells Based on Low‐cost Pentacyclic A‐DA’D‐A Type Non‐fullerene Acceptor

Solar RRL ◽  
2021 ◽  
Author(s):  
Jiage Song ◽  
Fangfang Cai ◽  
Can Zhu ◽  
Honggang Chen ◽  
Qingya Wei ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Low Cost

15.71% Efficiency All‐Small‐Molecule Organic Solar Cells Based on Low‐Cost Synthesized Donor Molecules

2021 ◽  
pp. 2110159
Author(s):  
Jing Guo ◽  
Beibei Qiu ◽  
Dengchen Yang ◽  
Can Zhu ◽  
Liuyang Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Low Cost

Optimization of morphology of P3HT/PCBM films for organic solar cells: effects of thermal treatments and spin coating solvents

2007 ◽  
Vol 37 (3) ◽  
pp. 287-290 ◽  
Author(s):  
G. Janssen ◽  
A. Aguirre ◽  
E. Goovaerts ◽  
P. Vanlaeke ◽  
J. Poortmans ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Spin Coating ◽  
Thermal Treatments

Organic and nano-structured composite photovoltaics: An overview

2005 ◽  
Vol 20 (12) ◽  
pp. 3167-3179 ◽  
Author(s):  
Sophie E. Gledhill ◽  
Brian Scott ◽  
Brian A. Gregg
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Organic Semiconductors ◽  
Organic Solar Cells ◽  
Organic Materials ◽  
Low Cost ◽  
Open Circuit ◽  
Charge Generation ◽  
Dye Sensitized ◽  
Excitonic Solar Cells

Organic photovoltaic devices are poised to fill the low-cost, low power niche in the solar cell market. Recently measured efficiencies of solid-state organic cells are nudging 5% while Grätzel’s more established dye-sensitized solar cell technology is more than double this. A fundamental understanding of the excitonic nature of organic materials is an essential backbone for device engineering. Bound electron-hole pairs, “excitons,” are formed in organic semiconductors on photo-absorption. In the organic solar cell, the exciton must diffuse to the donor–accepter interface for simultaneous charge generation and separation. This interface is critical as the concentration of charge carriers is high and recombination here is higher than in the bulk. Nanostructured engineering of the interface has been utilized to maximize organic materials properties, namely to compensate the poor exciton diffusion lengths and lower mobilities. Excitonic solar cells have different limitations on their open-circuit photo-voltages due to these high interfacial charge carrier concentrations, and their behavior cannot be interpreted as if they were conventional solar cells. This article briefly reviews some of the differences between excitonic organic solar cells and conventional inorganic solar cells and highlights some of the technical strategies used in this rapidly progressing field, whose ultimate aim is for organic solar cells to be a commercial reality.

Spray coating fabrication of organic solar cells bypassing the limit of orthogonal solvents

2013 ◽  
Vol 102 (20) ◽  
pp. 203307 ◽  
Author(s):  
Silvia Colella ◽  
Marco Mazzeo ◽  
Giovanna Melcarne ◽  
Sonia Carallo ◽  
Giuseppe Ciccarella ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Spray Coating
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