Effect of the Preparation Procedure on the Morphology of Thin TiO2Films and Their Device Performance in Small-Molecule Bilayer Hybrid Solar Cells

2012 ◽  
Vol 4 (11) ◽  
pp. 5997-6004 ◽  
Author(s):  
Eva L. Unger ◽  
Francesca Spadavecchia ◽  
Kazuteru Nonomura ◽  
Pål Palmgren ◽  
Giuseppe Cappelletti ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Preparation Procedure ◽  
Device Performance ◽  
Hybrid Solar Cells

Morphology, molecular stacking, dynamics and device performance correlations of vacuum-deposited small-molecule organic solar cells

2014 ◽  
Vol 16 (19) ◽  
pp. 8852-8864 ◽  
Author(s):  
Chang-Wen Chen ◽  
Zheng-Yu Huang ◽  
Yi-Min Lin ◽  
Wei-Ching Huang ◽  
Yi-Hong Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Device Performance ◽  
Molecular Stacking

The “all carbon” organic solar cells based on the homocyclic molecule DBP as a donor and C60as an acceptor were comprehensively characterized.

Device Performance of Small-Molecule Azomethine-Based Bulk Heterojunction Solar Cells

2015 ◽  
Vol 27 (8) ◽  
pp. 2990-2997 ◽  
Author(s):  
Michiel L. Petrus ◽  
Frederik S. F. Morgenstern ◽  
Aditya Sadhanala ◽  
Richard H. Friend ◽  
Neil C. Greenham ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Bulk Heterojunction ◽  
Device Performance ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

Influence of morphology and polymer:nanoparticle ratio on device performance of hybrid solar cells—an approach in experiment and simulation

2013 ◽  
Vol 24 (48) ◽  
pp. 484005 ◽  
Author(s):  
Mario Arar ◽  
Manfred Gruber ◽  
Michael Edler ◽  
Wernfried Haas ◽  
Ferdinand Hofer ◽  
...  
Keyword(s):  
Solar Cells ◽  
Device Performance ◽  
Hybrid Solar Cells ◽  
Experiment And Simulation

scholarly journals Crystallites ofα-Sexithiophene in Bilayer Small Molecule Organic Solar Cells Double Efficiency

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Michal Radziwon ◽  
André Luis Fernandes Cauduro ◽  
Morten Madsen ◽  
Horst-Günter Rubahn
Keyword(s):  
Solar Cells ◽  
Research And Development ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Device Performance ◽  
Performance Parameters ◽  
Efficiency Increase ◽  
Conversion Efficiencies

Recent efforts in research and development of small molecule based organic solar cells have led to power conversion efficiencies exceeding 10%. Understanding the incorporated interfaces in these devices is an utterly important parameter for their improvement. Here we investigate the influence ofα-sexithiophene (α-6T) nanostructures on the performance parameters ofα-6T/C60inverted bilayer solar cells. Byin situcontrolled growth, crystallineα-6T nanostructures are formed in the devices and a correlation between the morphology of the structures and the device performance is presented. Under certain, well-defined circumstances, we observe an efficiency increase of around 100% when implementing crystalline nanostructures.

Naphthodithiophene-Diketopyrrolopyrrole Small Molecule Donors for Efficient Solution-Processed Solar Cells

2012 ◽  
Vol 1390 ◽  
Author(s):  
Stephen Loser ◽  
Carson J. Bruns ◽  
Hiroyuki Miyauchi ◽  
Rocío Ponce Ortiz ◽  
Antonio Facchetti ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Electron Acceptor ◽  
Efficient Solution ◽  
Power Conversion ◽  
Hole Mobility ◽  
Side Chain ◽  
Device Performance ◽  
Visible Absorption ◽  
Selection Of

ABSTRACTWe report the synthesis, characterization, and implementation of various naphtho[2,3- b:6,7-b’]dithiophene (NDT)-based donor molecules for organic photovoltaics (OPVs) When NDT(TDPP)2 (TDPP = thiophene-capped diketopyrrolopyrrole) contains all branched 2- ethylhexyl chains and is combined with the electron acceptor PC61BM, a power conversion efficiency (PCE) of 4.06±0.6% is achieved. This respectable PCE is attributed to the broad, high oscillator strength visible absorption, the ordered molecular packing, and a high hole mobility of 0.04 cm2·V-1·s-1. We find utilizing linear C-12 side chains on either the TDPP or NDT framework dramatically increases the d-spacing, which directly correlates with inferior OPV device performance. This leads to the conclusion that the selection of an appropriate side chain plays a key role in determining OPV device performance of a small molecule donor.

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