Photovoltaic cells, efficiency and optimization

Practical efficiency limits in organic photovoltaic cells: Functional dependence of fill factor and external quantum efficiency

We evaluate practical power conversion efficiency limits lim in bulk-heterojunction organic photovoltaic BHJ OPV cells and how the field dependence of exciton dissociation affects cell efficiencies. We treat the fill factor limit as a function of the donor-acceptor lowest unoccupied molecular orbital offset energy ELLO , calculating how this limit varies with decreasing ELLO. We also evaluate O...

Photovoltaic Cell − Singlet - Exciton - FissionExternal Quantum Efficiency

, 334 (2013); 340 Science et al. Daniel N. Congreve Based Organic Photovoltaic Cell − Singlet-Exciton-Fission External Quantum Efficiency Above 100% in a This copy is for your personal, non-commercial use only. clicking here. colleagues, clients, or customers by , you can order high-quality copies for your If you wish to distribute this article to others here. following the guidelines can be o...

Efficiency Maximization of Solar Photovoltaic Systems

Photovoltaic (PV) power generation has an important role to play due to the fact that it is a green source. The only emissions associated with PV power generation are those from the production of its components. Increasing the efficiency in PV plants so the power generated increases is a key aspect, as it will increase the incomes, reducing consequently the cost of the power generated so it wil...

Morphological and Photovoltaic Studies of TiO2 NTs for High Efficiency Solar Cells

Open circuit voltage and efficiency in ternary organic photovoltaic blends

Please do not adjust margins Please do not adjust margins Organic bulk heterojunction solar cells based on ternary blends of two donor absorbers and one acceptor are investigated by experiments and modeling. The commonly observed continuous tunability of the open circuit voltage í µí±½ í µí± ¶í µí±ª with donor1:donor2 ratio can quantitatively be explained as quasi-Fermi level splitting due to p...