Optical effects of shadow masks on short circuit current of organic photovoltaic devices

2012 ◽  
Vol 14 (11) ◽  
pp. 3837 ◽  
Author(s):  
Chi-Feng Lin ◽  
Bing-Hong Lin ◽  
Shun-Wei Liu ◽  
Wei-Feng Hsu ◽  
Mi Zhang ◽  
...  
Keyword(s):  
Short Circuit ◽  
Short Circuit Current ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Optical Effects

Synthesis and Photovoltaic Properties of Oligothiophene Derivatives with Liquid Crystal Properties

2010 ◽  
Vol 663-665 ◽  
pp. 832-835
Author(s):  
Li Guan ◽  
Juan Wang ◽  
Ming La ◽  
Yi Ping Zhong ◽  
Ping Liu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Photovoltaic Properties ◽  
Photovoltaic Materials ◽  
Crystal Properties

For the purpose of developing novel photovoltaic materials and organic photovoltaic devices with good performance characteristics, 5-cyano-2,2′:5′,2″-terthiophene (3T-CN) and 5-cyano -2,2′:5′,2″:5″,2″′-tetrathiophene (4T-CN) were synthesized. The 3T-CN and 4T-CN was donor-acceeptor type oligothiophene derivatives with liquid crystal properties. The rigid and flexible photovoltaic devices were fabricated using 3T-CN, 4T-CN and 3,4,9,10-perylenetertracarboxylic dianhydride (PTCDA). Comparision of the rigid device based on 4T showed that both rigid device glass-ITO/4T-CN/PTCDA/Al and flexible device PET-ITO/4T-CN/PTCDA/Al had higher short circuit current density (Isc) and power conversion efficiency (PCE) than that of glass-ITO/4T /PTCDA/Al. The -CN group played an important role in increasing Isc and PCE. It is due to that the mesogenic properties of 4T-CN, which enhances the efficiency by promoting forward interfacial electron transfer.

scholarly journals P3HT:PCBM Incorporated with Silicon Nanoparticles as Photoactive Layer in Efficient Organic Photovoltaic Devices

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Shang-Chou Chang ◽  
Yu-Jen Hsiao ◽  
To-Sing Li
Keyword(s):  
Silicon Nanoparticles ◽  
Short Circuit ◽  
Acid Methyl Ester ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Photoactive Layer

Silicon nanoparticles doped poly(3-hexylthiophene) and [6,6]-phenyl C61-butyric acid methyl ester blends (P3HT:PCBM: Si NP) have been produced as the photoactive layer of organic photovoltaic devices (OPVs). The silicon nanoparticles’ size is between 80 and 100 nm checked by transmission electron microscope (TEM). The 0.35 wt% Si NP doping OPVs exhibit higher power conversion efficiency (PCE) than other OPVs. The PCE of the OPVs increases from 3.01% to 3.38% mainly due to increasing short-circuit current density from 8.38 to 9.48 mA/cm2, while the open-circuit voltage remains the same. The Si NP can provide extra exciton separation and electron pathways in hybrid solar cells.

scholarly journals Fabrication of Hybrid Organic Photovoltaic Devices Using Electrostatic Spray Method

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Zhe-Wei Chiu ◽  
Yu-Jen Hsiao ◽  
Te-Hua Fang ◽  
Liang-Wen Ji
Keyword(s):  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Current Density ◽  
Short Circuit ◽  
Power Conversion ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Spray Method ◽  
Electrostatic Spray

Hybrid organic photovoltaic devices (OPVDs) are fabricated using the electrostatic spray (e-spray) method and their optical and electrical properties are investigated. E-spray is used to deposit a hybrid film (P3HT: PCBM/nanodiamond) with morphology and optical characteristics onto OPVDs. The root-mean-square roughness and optical absorption increase with increasing nanodiamond content. The performance of e-spray is comparable to that of the spin-coating method under uniform conditions. The device takes advantage of the high current density, power conversion efficiency, and low cost. Nanodiamond improves the short-circuit current density and power conversion efficiency. The best performance was obtained with 1.5 wt% nanodiamond content, with a current density of 7.28 mA/cm2and a power conversion efficiency of 2.25%.

Thiophene-free diphenyl-amino-stilbene-diketo-pyrrolo-pyrrole derivatives as donors for organic bulk heterojunction solar cells

2016 ◽  
Vol 70 (10) ◽  
Author(s):  
Jana Honová ◽  
Stanislav Luňák ◽  
Martin Vala ◽  
Stanislav Stříteský ◽  
Ladislav Fekete ◽  
...  
Keyword(s):  
Carrier Mobility ◽  
Bulk Heterojunction ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Charge Carrier Mobility ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Pyrrole Derivatives ◽  
Solar Cell Performance ◽  
Heterojunction Solar Cells

AbstractAn extended study on a group of four soluble diphenyl-amino-stilbene based diphenyl-diketopyrrolo-pyrrole molecules has been carried out. Using the materials in thin-film transistors it was shown that the above-mentioned compounds can be successfully used as donors in organic photovoltaic devices. Influence of the molecular symmetry and solubilizing chain on the morphology and solar cell performance are described. It was shown that a shorter and non-branched ethyl acetate chain leads to higher charge carrier mobility, short circuit current, and better fill factor. After the basic optimization, a power conversion efficiency of about 1.5 % was reached. This, to the best of our knowledge, is the highest reported efficiency of thiophene-free small-molecule diketo-pyrrolopyrroles.

Progress in Upscaling Organic Photovoltaic Devices

2021 ◽  
pp. 2100342
Author(s):  
Gabriel Bernardo ◽  
Tânia Lopes ◽  
David G. Lidzey ◽  
Adélio Mendes
Keyword(s):  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices
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