scholarly journals In-Line Sputtered Gallium and Aluminum Codoped Zinc Oxide Films for Organic Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Shang-Chou Chang

Gallium and aluminum codoped zinc oxide (GAZO) films were deposited at different temperatures by in-line sputtering. Aluminum is thermally unstable compared to other elements in GAZO films. The grains of GAZO films increase with deposition temperature. Coalescence between grains was observed for GAZO films deposited at 250°C. The deposition temperature exhibits positive influence on crystallinity, and electrical and optical properties of GAZO films. The carrier concentration and mobility of GAZO films increase, while the electrical resistivity of GAZO films decreases with deposition temperature. The average optical transmittance of GAZO films rises with deposition temperature. In-line sputtering demonstrates a potential method with simplicity, mass production, and large-area deposition to produce GAZO films with good electrical and optical quality. The electrical resistivity of 4.3×10−4 Ω cm and the average optical transmittance in the visible range from 400 to 800 nm of 92% can be obtained for GAZO films deposited at 250°C. The hybrid organic solar cells (OSC) were fabricated on GAZO-coated glass substrates. Blended poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61 butyric acid methyl ester (PCBM) were the photoactive materials in OSC. The power conversion efficiency of OSC is 0.65% for the OSC with the 250°C deposited GAZO electrode.

2015 ◽  
Vol 1132 ◽  
pp. 116-124 ◽  
Author(s):  
Joseph Asare ◽  
B. Agyei-Tuffour ◽  
O.K. Oyewole ◽  
G.M. Zebaze-Kana ◽  
W.O. Soboyejo

This research investigates the effects of bending on the electrical, optical, structural and mechanical properties of flexible organic photovoltaic (OPV) cells. Bulk heterojunction organic solar cells were fabricated on Polyethylene terephthalate (PET) substrates using Poly-3-hexylthiophene: [6, 6]-phenyl-C61-butyric acid methyl ester (P3HT: PCBM) as the active layer and Poly (3, 4-ethylenedioxythiophene) Polystyrenesulfonate (PEDOT: PSS) as the hole injection layer. All the organic layers were deposited by spin coating while the Al cathode was vacuum thermally evaporated. The Indium Tin Oxide (ITO) anode has an average optical transmittance of 85% in the visible spectrum, a sheet resistivity of 60 ohms per square and an average surface roughness of 3nm. The relationship between the optoelectronic performance of the various device layers and the applied mechanical strains has been analyzed. The effects of stress and strain on the current-voltage characteristics of the device and its failure were modeled using the Abaqus software.


2012 ◽  
Vol 512-515 ◽  
pp. 186-189
Author(s):  
Nan Hai Sun

The preparation and characteristics of ZnO(Zinc oxide) co-sputtered TaO (Ta oxide) electrodes(ZTO) grown on glass substrates using a specially designed composite target for use in organic solar cells are described. It was found that both the electrical and optical properties of the ZTO films were critically dependent on the Ar/O2 flow ratio and sputtering power. In addition, all ZTO electrodes show amorphous structure regardless of the Ar/O2 flow ratio, due to the low substrate temperature. We obtained the ZTO electrode with sheet resistance of 30 Ohm/square and average optical transmittance of 80% in room temperature. The conversion power efficiency by using ZTO electrode at optimized conditions is 2.6 %.


Author(s):  
Yi Wang ◽  
Ming Liu ◽  
Zhihui Chen ◽  
Yao Liu

Inverted organic solar cells (OSCs) containing high work-function metal anodes (e.g., Ag or Au) and modified indium tin oxide (ITO) cathodes are more compatible with large area printing technique and...


Solar RRL ◽  
2020 ◽  
Vol 4 (10) ◽  
pp. 2000241
Author(s):  
Geedhika K. Poduval ◽  
Leiping Duan ◽  
Md. Anower Hossain ◽  
Borong Sang ◽  
Yu Zhang ◽  
...  

Author(s):  
Masahiro Nakano ◽  
Sae Nakagawa ◽  
Fumiya Sato ◽  
Md. Shahiduzzaman ◽  
Makoto Karakawa ◽  
...  

2019 ◽  
Vol 28 (1) ◽  
pp. 66-73
Author(s):  
Ismail Borazan ◽  
Ayşe Celik Bedeloğlu ◽  
Ali Demir

In this article, the improvement in electrical performance of poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) (PEDOT:PSS) as the transparent electrode doped with different additives (ethylene glycol (EG), isopropyl alcohol) or treatment of sulfuric acid was enhanced that organic solar cells (OSCs) were produced by using poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl C61 butyric acid methyl ester. OSCs were fabricated by the doped or treated PEDOT:PSS films as transparent electrodes. The photoelectrical measurements were carried out and the effects of doping or treatment were compared. As a result, EG-added PEDOT:PSS electrode showed the best power conversion efficiency value of 1.87% among the PEDOT:PSS anodes.


Author(s):  
Olavo Cardozo ◽  
Sajid Farooq ◽  
Patricia M. A. Farias ◽  
Naum Fraidenraich ◽  
Andreas Stingl ◽  
...  

2012 ◽  
Vol 482-484 ◽  
pp. 394-397
Author(s):  
Ming Wei Li ◽  
Nan Hai Sun ◽  
Yun Wang Ge ◽  
Bo Lei Yao

This paper presents a new buffering layer(nickle oxide thin film) of organic solar cells. Nickle Oxide(NiO) thin film is a good alternative of hole tansporting layer. We investigates the film from physical and electrical aspects, such as morphology, deposition temperature, thickness etc. We find that the optimum fabrication conditions are: room temperature deposition, 10nm of thickness, and 30% oxygen proportion. The device strcture is Anode/NiO/P3HT[regioregular of poly(3-hexylthiophene)]: PCBM[(6,6)-phenyl C61 butyric acid methyl ester] /Al. And the best power conversion efficiency of device we got with NiO buffering layer is 2.49%, which is hundred times of ones without NiO buffering layer.


Solar Energy ◽  
2022 ◽  
Vol 231 ◽  
pp. 458-463
Author(s):  
Sanjay Kumar Swami ◽  
Neha Chaturvedi ◽  
Anuj Kumar ◽  
Vinod Kumar ◽  
Ashish Garg ◽  
...  

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