Influence of backbone modification of difluoroquinoxaline-based copolymers on the interchain packing, blend morphology and photovoltaic properties of nonfullerene organic solar cells

2019 ◽  
Vol 7 (6) ◽  
pp. 1681-1689 ◽  
Author(s):  
Yuxiang Li ◽  
Minseok Kim ◽  
Ziang Wu ◽  
Changyeon Lee ◽  
Young Woong Lee ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Photovoltaic Properties ◽  
Polymer Backbone ◽  
Crystalline Orientation ◽  
Blend Morphology ◽  
Donor And Acceptor ◽  
Backbone Modification ◽  
The Impact ◽  
Acceptor Molecules

The impact of the crystalline orientation of donor and acceptor molecules on the photovoltaic properties with modification of polymer backbone structures.

Elucidating the impact of molecular weight on morphology, charge transport, photophysics and performance of all-polymer solar cells

2020 ◽  
Vol 8 (40) ◽  
pp. 21070-21083 ◽  
Author(s):  
Duyen K. Tran ◽  
Amélie Robitaille ◽  
I. Jo Hai ◽  
Xiaomei Ding ◽  
Daiki Kuzuhara ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Charge Transport ◽  
Polymer Solar Cells ◽  
Polymer Molecular Weight ◽  
Photovoltaic Properties ◽  
Blend Morphology ◽  
And Performance ◽  
The Impact

This work provides a unified understanding on how polymer molecular weight influences the blend photophysics, blend morphology, charge transport, and photovoltaic properties of all-polymer solar cells.

Exploring the Effect of Electron Withdrawing Groups on Optoelectronic Properties of Pyrazole Derivatives as Efficient Donor and Acceptor Materials for Photovoltaic Devices

2019 ◽  
Vol 233 (11) ◽  
pp. 1625-1644 ◽  
Author(s):  
Ahmad Irfan ◽  
Mehboobali Pannipara ◽  
Abdullah G. Al-Sehemi ◽  
Muhammad Waseem Mumtaz ◽  
Mohammed A. Assiri ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Density Functional ◽  
Dye Sensitized Solar Cells ◽  
Acid Methyl Ester ◽  
Good Choice ◽  
Band Alignment ◽  
Photovoltaic Devices ◽  
Photovoltaic Properties ◽  
Donor And Acceptor

Abstract Multifunctional pyrazole derivative, i.e. 3-amino-1-(5-hydroxy-3-methyl-1H-pyrazol-4-yl)-1H-benzo[f]chromene-2-carbonitrile (PBCC) has been synthesized and characterized. To shed light on various properties of interests, the ground state geometry was optimized by adopting Density Functional Theory (PBE/TZ2P). The effect of different functionals on the absorption wavelengths was studied by using Time-Domain DFT (TDDFT), e.g. GGA functional PBE, hybrid functionals B3LYP and PBE0, rang separated functionals CAM-B3LYP, LCY-PBE and CAMY-B3LYP, Dispersion Corrections PBE-D3 and B3LYP-D3. Among all these functionals PBE and PBE-D3 were found to be good choices which reproduced the absorption spectra of the PBCC. With the aim to enhance the electro-optical, charge transfer and photovoltaic properties, five new derivatives were designed by di-substituting the –F, –Cl, –Br, –COOH and –CN at benzochromene moiety. The electron injection barrier, band gap alignment and related calculated photovoltaic parameters revealed that PBCC and its newly designed derivatives would be proficient to be used in photovoltaic devices. These compounds can be used as donor materials in dye-sensitized solar cells (DSSCs) with favorable type-II band alignment. Moreover, PBCC and most of its derivatives might also be good choice as efficient acceptors with poly(dithieno[3,2-b:2,3-d]pyrrole thiophene) (PDTPr-T) and donor materials with Phenyl-C61-butyric acid methyl ester (PC61BM) in organic solar cells.

14.7% all-small-molecule organic solar cells enabled with fullerene derivative incorporation

2021 ◽  
Author(s):  
Hu Dingqin ◽  
Hua Tang ◽  
Haiyan Chen ◽  
Jie Lv ◽  
Shirong Lu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Fullerene Derivative ◽  
Photovoltaic Properties

Ternary strategy is promising to enhance the photovoltaic properties of organic solar cells (OSCs). Nevertheless, it is full of challenging when this approach involving only small molecule. Herein, a fullerene...

scholarly journals Impact of Blend Morphology on Interface State Recombination in Bulk Heterojunction Organic Solar Cells

2015 ◽  
Vol 25 (7) ◽  
pp. 1090-1101 ◽  
Author(s):  
Benjamin Bouthinon ◽  
Raphaël Clerc ◽  
Jérôme Vaillant ◽  
Jean-Marie Verilhac ◽  
Jérôme Faure-Vincent ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Interface State ◽  
Blend Morphology

Synthesis and photovoltaic properties of A–D–A type non-fullerene acceptors containing isoindigo terminal units

RSC Advances ◽  
2015 ◽  
Vol 5 (130) ◽  
pp. 107566-107574 ◽  
Author(s):  
Xin Liu ◽  
Yuan Xie ◽  
Xinyi Cai ◽  
Yunchuan Li ◽  
Hongbin Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Organic Molecules ◽  
Photovoltaic Properties ◽  
Donor Acceptor ◽  
Solution Processable ◽  
Terminal Units

Four solution-processable acceptor–donor–acceptor structured organic molecules with isoindigo as terminal acceptor units and different aromatic rigid planar cores as donor units were designed and synthesized as the acceptor materials in organic solar cells (OSCs).

Effect of temperature on organic Schottky barrier cells

1981 ◽  
Vol 59 (6) ◽  
pp. 727-732 ◽  
Author(s):  
Rafik O. Loutfy ◽  
Cheng-Kuo Hsiao
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Schottky Barrier ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Short Circuit ◽  
Power Conversion ◽  
Open Circuit ◽  
Effect Of Temperature ◽  
Photovoltaic Properties

The effect of temperature on the photovoltaic properties of indium/metal-free phthalocyanine Schottky barrier solar cells was investigated in the range 260–350 K. In general, the short circuit photocurrent, Jsc, and fill factor, ff, increased with increasing temperature (in contrast to inorganic photocells). The device series resistance and open circuit photovoltage, Voc, decreased (similar to inorganic photocells) as temperature was raised. An increase in the overall power conversion efficiency, η, has been observed with increase of temperature. In the case of x-H2Pc, the power conversion efficiency increased by 2.5 times due to a temperature rise of 60 °C above ambient. Thus, for operation at temperatures above ambient, organic solar cells may offer a significant advantage over inorganic cells.Analysis of the variation of the photovoltage with temperature showed that the decrease in Voc is mainly due to variation injunction impedance, which is controlled by thermionic current at high temperature and ionized impurity at low temperature.

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