Cathode interlayer-free organic solar cells with enhanced device performance upon alcohol treatment

2019 ◽  
Vol 7 (26) ◽  
pp. 7947-7952 ◽  
Author(s):  
Xuebin Chen ◽  
Bei Zhu ◽  
Bin Kan ◽  
Ke Gao ◽  
Xiaobin Peng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Alcohol Treatment ◽  
Device Performance ◽  
Device Structure ◽  
Solvent Treatment ◽  
Cathode Interlayer

Solvent treatment was used to simplify the device structure and enhance the device performance of porphyrin-based small molecule solar cells.

Enhanced efficiency of organic solar cells via Si-based non-conjugated small-molecule electrolyte as cathode interlayer

2020 ◽  
Vol 85 ◽  
pp. 105863
Author(s):  
Yanbo Li ◽  
Wei Song ◽  
Tingting Yan ◽  
Jingbo Xiao ◽  
Yufang Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Cathode Interlayer

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.

Efficient Small-Molecule-Based Inverted Organic Solar Cells With Conjugated Polyelectrolyte as a Cathode Interlayer

2015 ◽  
Vol 5 (4) ◽  
pp. 1118-1124 ◽  
Author(s):  
Qingduan Li ◽  
Feng Liu ◽  
Xiaowen Hu ◽  
Wenzhan Xu ◽  
Liping Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Conjugated Polyelectrolyte ◽  
Cathode Interlayer

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.

High-Performance All-small-molecule Organic Solar Cells without Interlayers

2021 ◽  
Author(s):  
Jie Min ◽  
Rui Sun ◽  
Yao Wu ◽  
Jie Guo ◽  
Yuheng Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
Solvent Treatment ◽  
Interfacial Layers

In this work, we report a two-step solvent treatment (TSST) strategy to fabricate high-performance all-small molecule solar cells (all-SMSCs) without interfacial layers (IFLs), which only consist of an active layer...

scholarly journals Small-Molecule Donor/Polymer Acceptor Type Organic Solar Cells: Effect of Terminal Groups of Small-Molecule Donors

2019 ◽  
Vol 01 (01) ◽  
pp. 088-094 ◽  
Author(s):  
Junhui Miao ◽  
Bin Meng ◽  
Jun Liu ◽  
Lixiang Wang
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Terminal Group ◽  
Device Performance ◽  
The Core ◽  
Polymer Acceptor ◽  
The One

Small-molecule donor/polymer acceptor type (MD/PA-type) organic solar cells (OSCs) have the great advantage of superior thermal stability. However, very few small molecular donors can match polymer acceptors, leading to low power conversion efficiency (PCE) of MD/PA-type OSCs. In this work, we studied the effect of terminal groups of small molecular donors on the optoelectronic properties and OSC device performance of MD/PA-type OSCs. We select a benzodithiophene unit bearing carbazolyl substituents as the core, terthiophene as the bridging unit, and electron-withdrawing methyl 2-cyanoacetate, 3-ethylrhodanine, and 2H-indene-1,3-dione as the terminal groups to develop three small-molecule donors. With the increase of the electron-withdrawing capability of the terminal groups, the small molecular donors exhibit redshifted absorption spectra and downshifted LUMO levels. Among the three small-molecule donors, the one with 3-ethylrhodanine terminal group exhibits the best photovoltaic performance with the PCE of 8.0% in MD/PA-type OSCs. This work provides important guidelines for the design of small-molecule donors for MD/PA-type OSC applications.

Effects of alkyl chains on intermolecular packing and device performance in small molecule based organic solar cells

2017 ◽  
Vol 141 ◽  
pp. 262-268 ◽  
Author(s):  
Yamin Zhang ◽  
Miaomiao Li ◽  
Huanran Feng ◽  
Wang Ni ◽  
Hongtao Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Device Performance ◽  
Alkyl Chains

scholarly journals An N-type Naphthalene Diimide Ionene Polymer as Cathode Interlayer for Organic Solar Cells

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 454
Author(s):  
Roberto Sorrentino ◽  
Marta Penconi ◽  
Anita Andicsová-Eckstein ◽  
Guido Scavia ◽  
Helena Švajdlenková ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Cationic Polyelectrolyte ◽  
Visible Range ◽  
Device Structure ◽  
Naphthalene Diimide ◽  
The Stability ◽  
Cathode Interlayer

Polymer solar cells (PSCs) based on non-fullerene acceptors have the advantages of synthetic versatility, strong absorption ability, and high thermal stability. These characteristics result in impressive power conversion efficiency values, but to further push both the performance and the stability of PSCs, the insertion of appropriate interlayers in the device structure remains mandatory. Herein, a naphthalene diimide-based cathode interlayer (NDI-OH) is synthesized with a facile three-step reaction and used as a cathode interlayer for fullerene and non-fullerene PSCs. This cationic polyelectrolyte exhibited good solubility in alcohol solvents, transparency in the visible range, self-doping behavior, and good film forming ability. All these characteristics allowed the increase in the devices’ power conversion efficiencies (PCE) both for fullerene and non-fullerene-based PSCs. The successful results make NDI-OH a promising cathode interlayer to apply in PSCs.

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