scholarly journals Design of Organic Solar Cells as a Function of Radiative Quantum Efficiency

2017 ◽  
Vol 8 (3) ◽  
Author(s):  
Blaise Godefroid ◽  
Gregory Kozyreff
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
Organic Solar Cells ◽  
Radiative Quantum Efficiency

Semi-Transparent Tandem Organic Solar Cells with 90% Internal Quantum Efficiency

2012 ◽  
Vol 2 (12) ◽  
pp. 1467-1476 ◽  
Author(s):  
Zheng Tang ◽  
Zandra George ◽  
Zaifei Ma ◽  
Jonas Bergqvist ◽  
Kristofer Tvingstedt ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
Organic Solar Cells ◽  
Internal Quantum Efficiency

Enhancing the Internal Quantum Efficiency and Stability of Organic Solar Cells via Metallic Nanofunnels

2015 ◽  
Vol 5 (24) ◽  
pp. 1501393 ◽  
Author(s):  
Se-Woong Baek ◽  
Jong Hun Kim ◽  
Juhoon Kang ◽  
Hyunsoo Lee ◽  
Jeong Young Park ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
Organic Solar Cells ◽  
Internal Quantum Efficiency

scholarly journals Molecular Chromophore-DNA Architectures With Fullerenes: Optical Properties and Solar Cells

2021 ◽  
Vol 9 ◽  
Author(s):  
Sara Müller ◽  
Felix Manger ◽  
Lorenz Graf von Reventlow ◽  
Alexander Colsmann ◽  
Hans-Achim Wagenknecht
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
Organic Solar Cells ◽  
Electrostatic Interactions ◽  
Solid Phase ◽  
Directed Assembly ◽  
Cd Spectroscopy ◽  
Structural Element ◽  
Optoelectronic Applications ◽  
Dna Template

Supramolecular chemistry allows the construction of complex molecular architectures and the design of collective photophysical properties. DNA is an attractive template to build such supramolecular architectures due to its helical structure, the defined distances between the bases and the canonical base pairing that results in precise control of the chromophore position. The tailored properties of DNA-templated supramolecules eventually allow their implementation into optoelectronic applications. For the generation of free charge carriers from photo-generated excitons, fullerenes can be utilized. We synthesized two fullerene derivates, one of which binds by electrostatic interactions to single-stranded DNA, while the other contains two 2′-deoxyuridine moieties and assembles specifically along oligo-2′-deoxyadenosines (dA20) as DNA template. The DNA-directed assembly of both fullerenes in aqueous solution was investigated by UV/Vis absorbance and circular dichroism (CD) spectroscopy. The specific interactions with DNA make fullerenes with the 2′-deoxyuridine moieties a significantly better component for supramolecular DNA architectures. We studied the fluorescence quenching of both fullerenes with a DNA chromophore assembly. To investigate one of the key properties for optoelectronic applications, that is the supramolecular structure of the DNA-based assemblies in the solid phase, we characterized the CD of supramolecular chromophore-DNA architectures in thin films. Remarkably, the helical chirality of the chromophore assemblies that is induced by the DNA template is conserved even in the solid state. Upon implementation into organic solar cells, the external quantum efficiency measurements showed charge carrier generation on all three chromophore components of the DNA assemblies. The fullerenes with the 2′-deoxyuridine moieties enhance the quantum efficiency of the conversion process significantly, demonstrating the potential of DNA as structural element for ordering chromophores into functional π-systems, which may be employed in future organic solar cells.

scholarly journals On the front and back side quantum efficiency differences in semi-transparent organic solar cells and photodiodes

2018 ◽  
Vol 123 (12) ◽  
pp. 125501 ◽  
Author(s):  
B. Bouthinon ◽  
R. Clerc ◽  
J. M. Verilhac ◽  
B. Racine ◽  
J. De Girolamo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
Organic Solar Cells ◽  
Back Side

Why ultrafast charge separation occurs in bulk-heterojunction organic solar cells: a multichain tight binding model study

2021 ◽  
Author(s):  
Yujuan Huang ◽  
Longlong Zhang ◽  
Yuying Hao
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
Organic Solar Cells ◽  
Charge Separation ◽  
Bulk Heterojunction ◽  
Internal Quantum Efficiency ◽  
Tight Binding ◽  
Tight Binding Model ◽  
Binding Model ◽  
Model Study

Bulk-heterojunction (BHJ) organic solar cells (OSCs) exhibit the ultrafast charge separation (UCS) ability, enables lowering the geminate charge recombination and achieving the high internal quantum efficiency. Unravelling why UCS occurs...

Reducing non-radiative recombination energy loss via a fluorescence intensifier for efficient and stable ternary organic solar cells

2021 ◽  
Author(s):  
Xuan Liu ◽  
Yang Liu ◽  
Yongfeng Ni ◽  
Ping Fu ◽  
Xuchao Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Loss ◽  
Quantum Efficiency ◽  
Organic Solar Cells ◽  
Radiative Recombination ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Effective Strategy ◽  
Recombination Energy ◽  
Photoactive Layer

Increasing electroluminescene quantum efficiency (EQEEL) of photoactive layer to reduce non-radiative recombination energy loss (Eloss) has been demonstrated an effective strategy to improve open-circuit voltage (Voc) of organic solar cells...

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