Tuning the optoelectronic properties of Benzo Thiophene (BT-CIC) based non-fullerene acceptor organic solar cell

Organic solar cells have become a center of attention in the field of research and technology due to its remarkable features. In the current research work, we designed Benzo Thiophene (BT-CIC) based non-fullerene acceptor organic solar cell having A-D-A novel structure. The designed structures D1-D4 were derived from BT-CIC (non-fullerene acceptor) by replacing 2-(5,6-dichloro-2-methylene-3-oxo-2,3-dihydro-1H-inden-1-ylidene)acetonitrile of reference molecule R with different electron withdrawing end-capper acceptor moieties. The effect of end acceptor groups on absorption, energy level, charge transport, morphology, and photovoltaic properties of the designed molecules (D1-D4) were investigated by TD-DFT B3LYP/6-31G basic level of theory and compared with reference molecule R. Among all novel structures, D3 exhibited maximum absorption ([Formula: see text]) of 701.7[Formula: see text]nm and 755.2[Formula: see text]nm in gaseous state anfd chloroform, respectively. The red shift in D3 was due to the presence of strong electron withdrawing acceptor moiety and more extended conjugation as compared to other structures. D3 also displayed lowest values of energy bandgap (1.97 eV), [Formula: see text] (0.0063[Formula: see text]eV) and [Formula: see text] (0.0099[Formula: see text]eV) and which signify its ease electron mobility. Lowest value of binding energy 1.20[Formula: see text]eV of D3 suggested that this molecule could be easily dissociated into charge carriers TDM results revealed that easy exciton dissociation occurred in D3. Overall, designed structure D3 was found to be more effective and efficient acceptor molecule for SMOSCs. The findings provide novel information for the development of non-fullerene acceptors for OPVs.

Download Full-text

Boron-Nitrogen Doped Dihydroindeno[1,2-b]fluorene Derivatives as Acceptors in Organic Solar Cells

10.26434/chemrxiv.8345516 ◽

2019 ◽

Author(s):

Matthew Morgan ◽

Maryam Nazari ◽

Thomas Pickl ◽

J. Mikko Rautiainen ◽

Heikki M. Tuononen ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Organic Solar Cells ◽

Organic Solar Cell ◽

Broad Absorption ◽

Nitrogen Doped ◽

Large Depth ◽

End Products ◽

Boron Nitrogen ◽

The Way

The electrophilic borylation of 2,5-diarylpyrazines results in the formation of boron-nitrogen doped dihydroindeno[1,2-<i>b</i>]fluorene which can be synthesized via mildly air-sensitive techniques and the end products handled readily under atmosphereic conditions. Through transmetallation via diarylzinc reagents a series of derivatives were sythesized which show broad absorption profiles that highlight the versatility of this backbone to be used in organic solar cell devices. These compounds can be synthesized in large yields, in alow number of steps and functionalized at many stages along the way providing a large depth of possibilities. Exploratory device paramaters were studied and show PCE of 2%.

Download Full-text

Additive-induced Miscibility Regulation and Hierarchical Morphology Enables 17.5% Binary Organic Solar Cells

Energy & Environmental Science ◽

10.1039/d0ee04012f ◽

2021 ◽

Author(s):

Jie Lv ◽

Hua Tang ◽

Jiaming Huang ◽

Cenqi Yan ◽

Kuan Liu ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Organic Solar Cells ◽

Organic Solar Cell ◽

Power Conversion ◽

Charge Trapping ◽

Free Charge ◽

Charge Generation ◽

Low Charge ◽

Hierarchical Morphology

Due to the barrierless free charge generation, low charge trapping, and high charge mobilities, the PM6:Y6 organic solar cell (OSC) achieves excellent power conversion efficiency (PCE) of 15.7%. However, the...

Download Full-text

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

World Journal of Engineering ◽

10.1260/1708-5284.12.5.413 ◽

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.

Download Full-text

Stability of inverted organic solar cells with ZnO contact layers deposited from precursor solutions

Energy & Environmental Science ◽

10.1039/c4ee02488e ◽

2015 ◽

Vol 8 (2) ◽

pp. 592-601 ◽

Cited By ~ 70

Author(s):

Bradley A. MacLeod ◽

Bertrand J. Tremolet de Villers ◽

Philip Schulz ◽

Paul F. Ndione ◽

Hyungchul Kim ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Phosphonic Acid ◽

Organic Solar Cells ◽

Zinc Acetate ◽

Organic Solar Cell ◽

Solution Processed ◽

Interstitial Zinc ◽

Cell Stability

Interstitial zinc defects in solution-processed ZnO can be mitigated by using a diethylzinc precursor instead of zinc acetate, or by modifying the ZnO surface with a phosphonic acid, resulting in improved organic solar cell stability.

Download Full-text

An Improved Triple-Tandem Organic Solar Cell

MRS Proceedings ◽

10.1557/proc-1212-s03-19 ◽

2009 ◽

Vol 1212 ◽

Author(s):

Dewei Zhao ◽

Xiao Wei Sun ◽

Lin Ke ◽

Swee Tiam Tan

Keyword(s):

Solar Cell ◽

Small Molecule ◽

Organic Solar Cells ◽

Organic Solar Cell ◽

Copper Phthalocyanine ◽

Short Circuit ◽

Short Circuit Current ◽

Open Circuit ◽

Solar Irradiation ◽

The Third

AbstractWe present an efficient polymer-small molecule triple-tandem organic solar cell (OSC), consisting of poly(3-hexylthiophene) (P3HT) and 1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6)C61 (PCBM) bulk heterojunction as the first and second cells, and small molecules copper phthalocyanine (CuPc) and fullerene (C60) as the third cell on top. These sub-cells are connected by an intermediate layer of Al(1 nm)/MoO3(15 nm), which appears to be highly transparent, structurally smooth, and electrically functional. Compared to our previous all polymer triple-tandem organic solar cells (2.03%), this polymer-small molecule triple-tandem organic solar cell achieves an improved power conversion efficiency of 2.18% with a short-circuit current density (Jsc) = 3.02 mA/cm2, open-circuit voltage (Voc) = 1.51 V, and fill factor (FF) = 47.7% under simulated solar irradiation of 100 mW/cm2 (AM1.5G), which can be attributed to the increased photocurrent generation in the third cell since the third cell has the complementary absorption with two bottom cells despite a slightly reduced Voc.

Download Full-text

New indolo carbazole-based non-fullerene n-type semiconductors for organic solar cell applications

Journal of Materials Chemistry C ◽

10.1039/c8tc05318a ◽

2019 ◽

Vol 7 (3) ◽

pp. 543-552 ◽

Cited By ~ 6

Author(s):

Suman Suman ◽

Afzal Siddiqui ◽

M. L. Keshtov ◽

Ganesh D. Sharma ◽

Surya Prakash Singh

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Organic Solar Cells ◽

Organic Solar Cell ◽

Molecular Engineering ◽

End Groups

In this work, two new indolo-[3,2-b]-carbazole (ICz) core-based non-fullerene acceptors (ICz-Rd2 and ICz-RdCN2) with an A–π–D–π–A backbone were designed, synthesized, and characterized and the influence of molecular engineering on the terminal end groups on their performance in organic solar cells (OSCs) was systematically examined.

Download Full-text

Machine learning for high performance organic solar cells: current scenario and future prospects

Energy & Environmental Science ◽

10.1039/d0ee02838j ◽

2021 ◽

Author(s):

Asif Mahmood ◽

Jin-Liang Wang

Keyword(s):

Machine Learning ◽

Solar Cell ◽

Organic Solar Cells ◽

Organic Solar Cell ◽

High Performance ◽

Material Design ◽

Data Driven ◽

Future Prospects ◽

Current Scenario ◽

Review Current

In this review, current research status about the machine learning use in organic solar cell research is reviewed. We have discussed the challenges in anticipating the data driven material design.

Download Full-text

Plasmonic organic solar cell employing Au NP:PEDOT:PSS doped rGO

RSC Advances ◽

10.1039/c5ra02878g ◽

2015 ◽

Vol 5 (30) ◽

pp. 23892-23899 ◽

Cited By ~ 12

Author(s):

Seung Joo Lee ◽

Jae-Yeon Kim ◽

Abd. Rashid bin Mohd Yusoff ◽

Jin Jang

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Organic Solar Cells ◽

Organic Solar Cell ◽

Au Nps ◽

Control Devices ◽

Comprehensive Study

We report a comprehensive study of the influence of NPs on organic solar cells by introducing Au NPs into OSCs fabricated using PEDOT:PSS:rGO. The PEDOT:PSS:rGO embedded with Au NPs had better Jsc and PCE values than the control devices.

Download Full-text

DFT Study of New Donor-π-Acceptor Materials Based on Thieno[2,3-b] Indole Candidate for Organic Solar Cells Application

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1002.221 ◽

2020 ◽

Vol 1002 ◽

pp. 221-229

Author(s):

Faeq A. Al-Temimei ◽

Lubna A. Alasadi ◽

Azhar S. Alaboodi

Keyword(s):

Solar Cells ◽

Organic Solar Cells ◽

Electronic Structures ◽

Oxidation Process ◽

Energy Gap ◽

Energy Levels ◽

Photovoltaic Properties ◽

Photo Oxidation ◽

Td Dft ◽

Homo And Lumo

In present search, we report theoretical analysis by using DFT (TD-DFT)-B3LYP with 6-31G (d, p) level on the geometries, optoelectronic and absorption characteristics of novel a series of the donor-π-acceptor dyes. Their π-conjugated bridge is based on the thiophene, benzene, pyridine, and pyrazine, the thieno [2,3-b] indole was used as an electron donor (D) and the acid 2-cyanoacrylic was used as an electron acceptor (A) group. The theoretical information of the electronic structures such as energy levels (HOMO and LUMO) and energy gap of the molecules is based on study the dyes in organic solar cells. Consequently the energy levels, energy gap, photovoltaic properties, quantum chemical and absorption parameters of all the dyes have been computed and reported. The calculations show that the dyes under study can theoretically be good photosensitizers in DSSCs. Also, the results show that the LUMO levels of all dyes design lie over the conduction band (Ecb) of the semiconductors TiO2 (or PC70BM) likewise the HOMO levels lie under the decrease potential vitality of the (electrolytes) comparing to ability of electron transfer from the molecular dye excited state to TiO2 (or PC70BM) and chargeerenewal after photo-oxidation process, separately.

Download Full-text