scholarly journals Statistical study of thermoradiative and photovoltaic cells based on a two-level model

2021 ◽  
Author(s):  
J. J. Fernández
Keyword(s):  
Statistical Study ◽  
Open Circuit Voltage ◽  
Chemical Potential ◽  
Photovoltaic Cells ◽  
Open Circuit ◽  
Energy Model ◽  
Conversion Process ◽  
Level Energy ◽  
Level Model ◽  
Two Level Model

AbstractWe use a two-level energy model to understand the conversion process that takes place in thermoradiative cells and to compare it with the conversion process that happens in photovoltaic cells. In this way, we show that in both kinds of converters the conversion process can be studied as the succession of a change in the populations of the levels that occur at constant chemical potential and a change in the value of the chemical potential of the two levels that happens while keeping their populations constant. As an application of the model, we will discuss why in thermoradiative cells the open-circuit voltage is negative while it is positive in photovoltaic cells. We also show that the expression for the open-circuit voltage is the same in both kinds of cells but that due to the values of the temperatures it is negative in thermoradiative cells and positive in photovoltaic ones.

High open circuit voltage organic photovoltaic cells based on oligothiophene derivatives

2006 ◽  
Vol 89 (21) ◽  
pp. 213501 ◽  
Author(s):  
Ping Liu ◽  
Qiang Li ◽  
Mingsheng Huang ◽  
Wanzhang Pan ◽  
Wenji Deng
Keyword(s):  
Open Circuit Voltage ◽  
Photovoltaic Cells ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Organic Photovoltaic Cells

scholarly journals Ultra-low p-doping of poly(3-hexylthiophene) and its impact on polymer aggregation and photovoltaic performance

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Marcel M. Said ◽  
Yadong Zhang ◽  
Raghunath R. Dasari ◽  
Dalaver H. Anjum ◽  
Rahim Munir ◽  
...  
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Open Circuit Voltage ◽  
Photovoltaic Performance ◽  
Photovoltaic Cells ◽  
Open Circuit ◽  
Device Performance ◽  
Long Range Order ◽  
P3ht Film ◽  
Low Levels

AbstractPoly(3-hexylthiophene) (P3HT) films and P3HT / fullerene photovoltaic cells have been p-doped with very low levels (< 1 wt. %) of molybdenum tris[1-(trifluoromethylcarbonyl)- 2-(trifluoromethyl)-ethane-1,2-dithiolene]. The dopants are inhomogenously distributed within doped P3HT films, both laterally and as a function of depth, and appear to aggregate in some instances. Doping also results in subtle changes in the local and long range order of the P3HT film. These effects likely contribute to the complexity of the observed evolutions in conductivity, mobility and work function with doping levels. They also negatively affect the open-circuit voltage and fill factor of solar cells in unexpected ways, indicating that dopant aggregation and non-uniform distribution can harm device performance.

Catalysis of Recombination and Its Limitation on Open Circuit Voltage for Dye Sensitized Photovoltaic Cells Using Phthalocyanine Dyes

2008 ◽  
Vol 130 (10) ◽  
pp. 2906-2907 ◽  
Author(s):  
Brian C. O'Regan ◽  
Ismael López-Duarte ◽  
M. Victoria Martínez-Díaz ◽  
Amparo Forneli ◽  
Josep Albero ◽  
...  
Keyword(s):  
Open Circuit Voltage ◽  
Photovoltaic Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Phthalocyanine Dyes

16.7%-efficiency ternary blended organic photovoltaic cells with PCBM as the acceptor additive to increase the open-circuit voltage and phase purity

2019 ◽  
Vol 7 (36) ◽  
pp. 20713-20722 ◽  
Author(s):  
Ming-Ao Pan ◽  
Tsz-Ki Lau ◽  
Yabing Tang ◽  
Yi-Ching Wu ◽  
Tao Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Open Circuit Voltage ◽  
Photovoltaic Cells ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Organic Photovoltaic Cells ◽  
Phase Purity ◽  
Lumo Level

Ternary solar cells with an efficiency of 16.7% were enabled through the use of PCBM as a higher LUMO-level acceptor additive to concurrently increase Voc, Jsc and FF values.

InGaAsSb photovoltaic cells with enhanced open-circuit voltage

2000 ◽  
Vol 147 (3) ◽  
pp. 199-204 ◽  
Author(s):  
O.V. Sulima ◽  
R. Beckert ◽  
J.A. Cox ◽  
A.W. Bett ◽  
M.G. Mauk
Keyword(s):  
Open Circuit Voltage ◽  
Photovoltaic Cells ◽  
Open Circuit

scholarly journals Improvement of Open-Circuit Voltage in Organic Photovoltaic Cells with Chemically Modified Indium-Tin Oxide

2013 ◽  
Vol 03 (04) ◽  
pp. 113-120
Author(s):  
Khayankhyarvaa Sarangerel ◽  
Byambasuren Delgertsetseg ◽  
Namsrai Javkhlantugs ◽  
Masaru Sakomura ◽  
Chimed Ganzorig
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Open Circuit Voltage ◽  
Photovoltaic Cells ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Organic Photovoltaic Cells ◽  
Chemically Modified

High Open-Circuit Voltage Photovoltaic Cells with a Low Bandgap Copolymer of Isothianaphthene, Thiophene, and Benzothiadiazole Units

2009 ◽  
Vol 113 (52) ◽  
pp. 21928-21936 ◽  
Author(s):  
Jung Yong Kim ◽  
Yang Qin ◽  
Derek M. Stevens ◽  
Vivek Kalihari ◽  
Marc A. Hillmyer ◽  
...  
Keyword(s):  
Open Circuit Voltage ◽  
Photovoltaic Cells ◽  
Open Circuit ◽  
Low Bandgap
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