Steric Control of the Donor/Acceptor Interface: Implications in Organic Photovoltaic Charge Generation

2011 ◽  
Vol 133 (31) ◽  
pp. 12106-12114 ◽  
Author(s):  
Thomas W. Holcombe ◽  
Joseph E. Norton ◽  
Jonathan Rivnay ◽  
Claire H. Woo ◽  
Ludwig Goris ◽  
...  
Keyword(s):  
Organic Photovoltaic ◽  
Charge Generation ◽  
Donor Acceptor ◽  
Steric Control

Charge generation in organic photovoltaics: a review of theory and computation

2016 ◽  
Vol 1 (1) ◽  
pp. 10-24 ◽  
Author(s):  
Kenley M. Pelzer ◽  
Seth B. Darling
Keyword(s):  
Organic Photovoltaics ◽  
Charge Separation ◽  
Photovoltaic Device ◽  
Organic Photovoltaic ◽  
Device Performance ◽  
Exciton Dissociation ◽  
Charge Generation ◽  
Computational Approaches ◽  
Organic Photovoltaic Device ◽  
Donor Acceptor

One of the most important factors in determining organic photovoltaic device performance is the efficiency of exciton dissociation and charge separation at donor/acceptor heterojunctions. This review discusses theoretical and computational approaches to modeling this crucial process of charge generation.

Quantum efficiency of exciton-to-charge generation in organic photovoltaic devices

2001 ◽  
Vol 89 (10) ◽  
pp. 5564-5569 ◽  
Author(s):  
Leif A. A. Pettersson ◽  
Lucimara S. Roman ◽  
Olle Inganäs
Keyword(s):  
Quantum Efficiency ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Charge Generation

Uphill and downhill charge generation from charge transfer to charge separated states in organic solar cells

2021 ◽  
Author(s):  
Shahidul Alam ◽  
Vojtech Nádaždy ◽  
Tomáš Váry ◽  
Christian Friebe ◽  
Rico Meitzner ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Solar Cells ◽  
Charge Transfer ◽  
Energy Level ◽  
Density Of States ◽  
Organic Solar Cells ◽  
Joint Density ◽  
Charge Generation ◽  
Donor Acceptor

Energy level alignments at the organic donor–acceptor interface cannot be predicted from cyclic voltammetry. Onsets for joint density of states and charge generation, reveal cases of energy uphill and – newly observed – downhill charge generation.

Charge Generation in Inorganic/Organic Photovoltaic Blends

2005 ◽  
pp. 783-785
Author(s):  
Sebastian Westenhoff ◽  
Sophia C. Hayes ◽  
Neil C. Greenham ◽  
Carlos Silva
Keyword(s):  
Organic Photovoltaic ◽  
Charge Generation

Scattering Techniques for Mixed Donor-Acceptor Characterization in Organic Photovoltaics

2021 ◽  
Author(s):  
Thomas Chaney ◽  
Andrew Levin ◽  
Sebastian Schneider ◽  
Michael F. Toney
Keyword(s):  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Photovoltaics ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Organic Photovoltaic ◽  
Precise Control ◽  
Active Layers ◽  
Complex Morphology ◽  
Donor Acceptor

Precise control of the complex morphology of organic photovoltaic bulk heterojunction (BHJ) active layers remains an important yet challenging approach for improving power conversion efficiency. Of particular interest are the...

scholarly journals Photoconversion Mechanism at the pn-Homojunction Interface in Single Organic Semiconductor

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1727 ◽  
Author(s):  
Ji-Hyun Lee ◽  
Armand Perrot ◽  
Masahiro Hiramoto ◽  
Seiichiro Izawa
Keyword(s):  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Energy Structure ◽  
Free Charge ◽  
Charge Generation ◽  
Recombination Processes ◽  
Single Host ◽  
Donor Acceptor ◽  
Doping Technique ◽  
Determining Factor

Clarifying critical differences in free charge generation and recombination processes between inorganic and organic semiconductors is important for developing efficient organic photoconversion devices such as solar cells (SCs) and photodetector. In this study, we analyzed the dependence of doping concentration on the photoconversion process at the organic pn-homojunction interface in a single organic semiconductor using the temperature dependence of J–V characteristics and energy structure measurements. Even though the organic pn-homojunction SC devices were fabricated using a single host material and the doping technique resembling an inorganic pn-homojunction, the charge generation and recombination mechanisms are similar to that of conventional donor/acceptor (D/A) type organic SCs; that is, the charge separation happens from localized exciton and charge transfer (CT) state being separated by the energy offset between adjacent molecules, and the recombination happens from localized charge carrier at two adjacent molecules. The determining factor for photoconversion processes is the localized nature of charges in organic semiconductors. The results demonstrated that controlling the delocalization of the charges is important to realize efficient organic photoconversion devices.

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