Investigating the Influence of Interfacial Contact Properties on Open Circuit Voltages in Organic Photovoltaic Performance: Work Function Versus Selectivity

2013 ◽  
Vol 3 (5) ◽  
pp. 647-656 ◽  
Author(s):  
Erin L. Ratcliff ◽  
Andres Garcia ◽  
Sergio A. Paniagua ◽  
Sarah R. Cowan ◽  
Anthony J. Giordano ◽  
...  
Keyword(s):  
Work Function ◽  
Function Versus ◽  
Photovoltaic Performance ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Interfacial Contact ◽  
Open Circuit Voltages

scholarly journals Thermal behaviour of dicarboxylic ester bithiophene polymers exhibiting a high open-circuit voltage

2018 ◽  
Vol 6 (14) ◽  
pp. 3731-3742 ◽  
Author(s):  
Ruurd Heuvel ◽  
Fallon J. M. Colberts ◽  
Martijn M. Wienk ◽  
René A. J. Janssen
Keyword(s):  
Solar Cells ◽  
Thermal Properties ◽  
Thermal Behaviour ◽  
Open Circuit Voltage ◽  
Photovoltaic Performance ◽  
Open Circuit ◽  
Side Chains ◽  
Open Circuit Voltages ◽  
Dicarboxylic Ester

Polythiophene derivatives with ester side chains enable high open-circuit voltages in polymer–fullerene solar cells. The side chains affect the solubility, thermal properties, tendency to aggregate, and photovoltaic performance by modulating the morphology of the blends.

Molecular and Morphological Influences on the Open Circuit Voltages of Organic Photovoltaic Devices

2009 ◽  
Vol 131 (26) ◽  
pp. 9281-9286 ◽  
Author(s):  
M. Dolores Perez ◽  
Carsten Borek ◽  
Stephen R. Forrest ◽  
Mark E. Thompson
Keyword(s):  
Open Circuit ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Open Circuit Voltages

Charge Recombination in Organic Photovoltaic Devices with High Open-Circuit Voltages

2008 ◽  
Vol 130 (41) ◽  
pp. 13653-13658 ◽  
Author(s):  
Sebastian Westenhoff ◽  
Ian A. Howard ◽  
Justin M. Hodgkiss ◽  
Kiril R. Kirov ◽  
Hugo A. Bronstein ◽  
...  
Keyword(s):  
Charge Recombination ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Open Circuit Voltages

scholarly journals Diketopyrrolopyrrole Derivatives Functionalized with N-Annulated PDI and Se-Annulated PDI by Direct (Hetero)Arylation Methods

2020 ◽  
Author(s):  
Maryam Nazari ◽  
Gregory Welch ◽  
Thomas A. Welsh
Keyword(s):  
Optical Properties ◽  
Computational Analysis ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Steric Strain ◽  
Se Substitution ◽  
Packing Arrangement ◽  
Open Circuit Voltages

<p>We report on the synthesis of diketopyrrolopyrrole (DPP) derivatives functionalized with N-annulated and Se-annulated perylene diimide (NPDI and SePDI, respectively) <i>via </i>direct (hetero)arylation methods. DPP is symmetrically bifunctionalized with SePDI (SePDI–DPP–SePDI) and unsymmetrically functionalized with SePDI and NPDI (SePDI–DPP–NPDI). The effects of Se substitution compared to N substitution on physical, electrochemical, and optical properties are investigated along with performance as non-fullerene acceptors in photovoltaic devices. It is found that Se substitution increases the electron affinity of the p-conjugated molecule and blue shifts the optical absorption spectra, observations that were supported by computational analysis. Steric strain between the PDI endcap and DPP core prevent complete electronic communication along the p-conjugated backbone and results in the unsymmetrical compound, SePDI‒DPP‒NPDI, having electronic and optical properties that are a linear combination of both the symmetrical SePDI and NPDI based compounds. Different is that the SePDI‒DPP‒NPDI compound has a distinct melt observed at 343 °C and organic photovoltaic devices based on this compound had lower than expected open-circuit voltages, suggesting a unique solid-state packing arrangement. SePDI-based compounds performed worse than the NPDI-based compound in organic photovoltaic devices using the donor polymer PTB7-Th. </p>

KF-Doped SnO2 as an electron transport layer for efficient inorganic CsPbI2Br perovskite solar cells with enhanced open-circuit voltages

2021 ◽  
Author(s):  
Senya Zhang ◽  
Hao Gu ◽  
Shan-Ci Chen ◽  
Qingdong Zheng
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Work Function ◽  
Perovskite Solar Cells ◽  
Open Circuit ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Open Circuit Voltages

KF was first introduced into the SnO2 ETL for all-inorganic CsPbI2Br PVSCs with enhanced performance by regulating the work function and passivating defects of the perovskite.

Substrate geometry CdTe solar cells with catalytically-grown nano-rough surfaces

MRS Advances ◽  
2016 ◽  
Vol 1 (14) ◽  
pp. 985-990
Author(s):  
G. Papageorgiou ◽  
J.D. Major ◽  
K. Durose
Keyword(s):  
Solar Cells ◽  
Indium Tin Oxide ◽  
Optical Transmission ◽  
Photovoltaic Performance ◽  
Open Circuit ◽  
Glass Substrates ◽  
Cdte Solar Cells ◽  
Nano Structures ◽  
Cdte Films ◽  
Open Circuit Voltages

ABSTRACTSubstrate geometry CdTe solar cells have been modified with the addition of metal-catalysed nano-structures in order to influence their efficiency. Conditions for the growth of Au- and Bi-catalysed nanostructures were explored. The substrate devices themselves comprised indium tin oxide/CdS/CdTe/Mo foil and were developed using the MgCl2 alternative to the usual CdCl2 processing – this yielded open circuit voltages of up to 740 mV. It was demonstrated that the addition of Au-catalysed nanowires to 200 nm thick CdTe films on glass substrates decreased their optical transmission by 10%, this being significantly higher than for thick films. However, reproducibility issues with forming Bi nanostructures limited the device modification tests to the use of Au-catalysed wires, and these always acted to depress photovoltaic performance.

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