Molecular Origin of Carbon–Oxygen‐Bridge Isomerization Induced Reverse Aggregation Ability in Acceptor–Donor–Acceptor Electron Acceptors for Organic Solar Cells

Solar RRL ◽  
2021 ◽  
pp. 2000780
Author(s):  
Jianchuan Liu ◽  
Wenyu Zheng ◽  
Guangchao Han ◽  
Yuanping Yi
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Electron Acceptors ◽  
Oxygen Bridge ◽  
Donor Acceptor ◽  
Molecular Origin

Evaluating the Nature of Vertical Excited-States of Fused-Ring Electron Acceptors Using TD-DFT and Density-Based Charge Transfer

2021 ◽  
Author(s):  
Weihua Tang ◽  
Amjad Ali ◽  
Muhammad Imran Rafiq ◽  
Baojing Zhou
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Absorption Spectra ◽  
Excited States ◽  
Organic Solar Cells ◽  
Electron Acceptors ◽  
Electronic Transitions ◽  
Td Dft ◽  
Fused Ring ◽  
Donor Acceptor

The acceptor-donor-acceptor structured fused-ring electron acceptors (FREAs) are the utmost efficient electron acceptors used in organic solar cells (OSCs). Typically, several efficient electronic transitions contribute to the absorption spectra of...

Importance of molecular rigidity on reducing the energy losses in organic solar cells: Implication from geometric relaxations of A-D-A electron acceptors

2021 ◽  
Author(s):  
Ruihong Duan ◽  
Guangchao Han ◽  
Lingbo Qu ◽  
Yuanping Yi
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Electron Acceptors ◽  
Energy Losses ◽  
Donor Acceptor ◽  
Molecular Rigidity ◽  
Conversion Efficiencies

Owing to the emergence of small-molecule acceptors with acceptor-donor-acceptor (A-D-A) structures, organic solar cells (OSCs) have developed rapidly in recent years. Currently, the power conversion efficiencies (PCEs) of the OSCs...

Triphenylamine based donor-acceptor-donor type small molecules for organic solar cells

2021 ◽  
Vol 1198 ◽  
pp. 113176
Author(s):  
Sadaf Bibi ◽  
Rasheed Ahmad Khera ◽  
Afifa Farhat ◽  
Javed Iqbal
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Donor Type ◽  
Donor Acceptor

Fabrication and characterization of CuPc and PCBM based organic solar cell with metal interlayer

2015 ◽  
Vol 12 (5) ◽  
pp. 413-420
Author(s):  
Muhammad Ahsan Naveed ◽  
A. Hussain ◽  
K. Islam ◽  
P. Akhter
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Impedance Spectroscopy ◽  
Organic Solar Cells ◽  
Organic Solar Cell ◽  
Silver Layer ◽  
Absorbance Spectrum ◽  
Heterojunction Solar Cells ◽  
Processing Cost ◽  
Donor Acceptor

Organic solar cells have potential as an alternative to conventional inorganic solar cell due to low processing cost, flexibility and easy fabrication technique. The goal of this paper is to study the characteristics of the CuPc and PCBM based organic solar cell by introducing a thin layer of Ag at the interface of donor (CuPc) and Acceptor (PCBM), their photovoltaic and optical properties were investigated. The heterojunction solar cells with and without silver inter layer were fabricated through thermal deposition in HR vacuum. The OPV solar cells were characterized using current-voltage graphs, absorbance spectrum and Impedance spectroscopy. Impedance spectroscopy was taken to identify the traps using series resistance, parallel resistance, and Impedance spectrums under different frequencies. Optical behaviors of these devices have been investigated with absorbance spectrum. Introducing Ag to interfacing point produced traps and these traps causes to decreased Voc, Isc, FF, and efficiency. The effect of silver layer at donor acceptor interface was studied.

Ethynyl-linked perylene bisimide based electron acceptors for non-fullerene organic solar cells

2018 ◽  
Vol 29 (2) ◽  
pp. 325-327 ◽  
Author(s):  
Changshi Yu ◽  
Yunhua Xu ◽  
Shijie Liang ◽  
Xudong Jiang ◽  
Guitao Feng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Electron Acceptors ◽  
Perylene Bisimide

Uphill and downhill charge generation from charge transfer to charge separated states in organic solar cells

2021 ◽  
Author(s):  
Shahidul Alam ◽  
Vojtech Nádaždy ◽  
Tomáš Váry ◽  
Christian Friebe ◽  
Rico Meitzner ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Solar Cells ◽  
Charge Transfer ◽  
Energy Level ◽  
Density Of States ◽  
Organic Solar Cells ◽  
Joint Density ◽  
Charge Generation ◽  
Donor Acceptor

Energy level alignments at the organic donor–acceptor interface cannot be predicted from cyclic voltammetry. Onsets for joint density of states and charge generation, reveal cases of energy uphill and – newly observed – downhill charge generation.

Rylene Diimide Electron Acceptors for Organic Solar Cells

2019 ◽  
Vol 1 (9) ◽  
pp. 869-881 ◽  
Author(s):  
Jiayu Wang ◽  
Xiaowei Zhan
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Electron Acceptors
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