Enhancing the photovoltaic performance of heteroheptacene-based nonfullerene acceptors through the synergistic effect of side-chain engineering and fluorination

2020 ◽  
Vol 8 (46) ◽  
pp. 24543-24552
Author(s):  
Dongdong Cai ◽  
Jianqi Zhang ◽  
Jin-Yun Wang ◽  
Yunlong Ma ◽  
Shuo Wan ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Side Chain ◽  
End Group ◽  
Nonfullerene Acceptor

The synergistic effect of end-group fluorination and side-chain engineering leads to a nonfullerene acceptor with an outstanding power conversion efficiency of 14.75%.

Synergistic effect of side-chain and backbone engineering in thieno[2,3-f]benzofuran-based conjugated polymers for high performance non-fullerene organic solar cells

2019 ◽  
Vol 7 (3) ◽  
pp. 958-964 ◽  
Author(s):  
Keke Dou ◽  
Xunchang Wang ◽  
Zurong Du ◽  
Huanxiang Jiang ◽  
Feng Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Synergistic Effect ◽  
Conjugated Polymers ◽  
Power Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Performance ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Side Chain ◽  
Alkyl Side Chains

A series of copolymers containing thieno[2,3-f]benzofuran unit with different alkyl side chains are synthesized. The best photovoltaic performance with power conversion efficiency over 11% have been realized.

A distorted lactam unit with intramolecular hydrogen bonds as the electron donor of polymer solar cells

2019 ◽  
Vol 7 (39) ◽  
pp. 12290-12296
Author(s):  
Hua-Chun Wang ◽  
Minrun Ren ◽  
Jian Cao ◽  
Hong-Bo Yin ◽  
Guichuan Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Hydrogen Bonds ◽  
Synergistic Effect ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Electron Donor ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Side Chain ◽  
Intramolecular Hydrogen

The device based on PBDT-BTP-OD with IT-M exhibited power conversion efficiency of up to 9.54% thanks to the synergistic effect of the distorted lactam motif and side-chain engineering.

scholarly journals Effect of main and side chain chlorination on the photovoltaic properties of benzodithiophene-alt-benzotriazole polymers

2020 ◽  
Vol 8 (43) ◽  
pp. 15426-15435
Author(s):  
Haijun Bin ◽  
Indunil Angunawela ◽  
Ruijie Ma ◽  
Asritha Nallapaneni ◽  
Chenhui Zhu ◽  
...  
Keyword(s):  
Energy Level ◽  
Charge Transport ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Open Circuit Voltage ◽  
Power Conversion ◽  
Open Circuit ◽  
Side Chain ◽  
Photovoltaic Properties ◽  
Homo Energy Level

Introduction of chlorine in the conjugated side chains significantly improves open-circuit voltage and power conversion efficiency, benefiting from a lower HOMO energy level, well-balanced charge transport and superior nanoscale morphology.

The comprehensive utilization of the synergistic effect of fullerene and non-fullerene acceptors to achieve highly efficient polymer solar cells

2019 ◽  
Vol 7 (26) ◽  
pp. 15841-15850 ◽  
Author(s):  
Zezhou Liang ◽  
Junfeng Tong ◽  
Hongdong Li ◽  
Yufei Wang ◽  
Ningning Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Synergistic Effect ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Power ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
High Power Conversion Efficiency ◽  
Comprehensive Utilization ◽  
Highly Efficient

A ternary strategy could combine the advantages of incorporated materials as an encouraging approach to achieve high power conversion efficiency (PCE) polymer solar cells (PSCs).

The effect of different alkyl chains on the photovoltaic performance of D–π–A porphyrin-sensitized solar cells

2015 ◽  
Vol 39 (5) ◽  
pp. 3736-3746 ◽  
Author(s):  
Jiangzhao Chen ◽  
Songguk Ko ◽  
Linfeng Liu ◽  
Yusong Sheng ◽  
Hongwei Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Alkyl Chains ◽  
Sensitized Solar Cells

Compared to the DSSCs based on WH-C1 and YD20 with short alkyl chains, the device sensitized by WH-C2 with the hexyloxy group shows a significantly enhanced Voc, Jsc and power conversion efficiency (η).

The influence of the central acceptor unit on the optoelectronic properties and photovoltaic performance of A–D–A–D–A-type co-oligomers

2017 ◽  
Vol 4 (5) ◽  
pp. 755-766 ◽  
Author(s):  
Ibrahim Ata ◽  
Duško Popovic ◽  
Mika Lindén ◽  
Amaresh Mishra ◽  
Peter Bäuerle
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Molecular Structures ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

A series of A–D–A–D–A co-oligomers was developed and implemented as donor materials in solution-processable organic solar cells showing the dependence of molecular structures on the power conversion efficiency upon solvent vapor annealing.

scholarly journals Single- or double A-site cations in A3Bi2I9 bismuth perovskites: What is the suitable choice?

2021 ◽  
Author(s):  
Feray Ünlü ◽  
Ashish Kulkarni ◽  
Khan Lê ◽  
Christoph Bohr ◽  
Andrea Bliesener ◽  
...  
Keyword(s):  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Organic Cations ◽  
Device Performance ◽  
Inorganic Cations ◽  
Device Efficiency ◽  
Bismuth Perovskite ◽  
A Site

Abstract Investigations on the effect of single or double A-site cation engineering on the photovoltaic performance of bismuth perovskite-inspired materials (A3Bi2I9) are rare. Herein, we report novel single- and double-cation based bismuth perovskite-inspired materials developed by (1) completely replacing CH3NH3+ (methylammonium, MA+) in MA3Bi2I9 with various organic cations such as CH(NH2)2+ (formamidinium, FA+), (CH3)2NH2+ (dimethylammonium, DMA+), C(NH2)3+ (guanidinium, GA+) and inorganic cations such as cesium (Cs+), rubidium (Rb+), potassium (K+), sodium (Na+) and lithium (Li+) and (2) partially replacing MA+ with Cs+ in different stoichiometric ratios. Compared to single-cation based bismuth perovskite devices, the double-cation bismuth perovskite device showed an increment in the device power conversion efficiency (PCE) up to 1.5% crediting to the reduction in the bandgap. This is the first study demonstrating double-cation based bismuth perovskite showing bandgap reduction and increment in device efficiency and opens up the possibilities towards compositional engineering for improved device performance. Graphic Abstract

Significantly Increasing the Power Conversion Efficiency by Controlling the Orientation of Nonfullerene Small Molecular Acceptors via Side Chain Engineering

Solar RRL ◽  
2020 ◽  
Vol 4 (7) ◽  
pp. 2000234 ◽  
Author(s):  
Guang Zeng ◽  
Yue Xin ◽  
Bo Zhang ◽  
Jinyang Ouyang ◽  
Xiaoli Zhao ◽  
...  
Keyword(s):  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Side Chain

scholarly journals Mn doped CdS passivated CuInSe2 quantum dot sensitized solar cells with remarkably enhanced photovoltaic efficiency

RSC Advances ◽  
2017 ◽  
Vol 7 (53) ◽  
pp. 33106-33112 ◽  
Author(s):  
Ikhtisham Mehmood ◽  
Yueli Liu ◽  
Keqiang Chen ◽  
Abdul Hakim Shah ◽  
Wen Chen
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Photovoltaic Efficiency ◽  
Sensitized Solar Cells ◽  
Mn Doped

This paper explores that novel architecture of CuInSe2/Mn-CdS exhibits remarkable enhancement in photovoltaic performance of the QDSSCs, which presents an excellent power conversion efficiency of 3.96%.

scholarly journals Effect of the π-conjugation length on the properties and photovoltaic performance of A–π–D–π–A type oligothiophenes with a 4,8-bis(thienyl)benzo[1,2-b:4,5-b′]dithiophene core

2016 ◽  
Vol 12 ◽  
pp. 1788-1797 ◽  
Author(s):  
Ni Yin ◽  
Lilei Wang ◽  
Yi Lin ◽  
Jinduo Yi ◽  
Lingpeng Yan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Energy Levels ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Terminal Group ◽  
Absorption Bands ◽  
Conjugated Molecules

Benzo[1,2-b:4,5-b′]dithiophene (BDT) is an excellent building block for constructing π-conjugated molecules for the use in organic solar cells. In this paper, four 4,8-bis(5-alkyl-2-thienyl)benzo[1,2-b:4,5-b′]dithiophene (TBDT)-containing A–π–D–π–A-type small molecules (COOP-nHT-TBDT, n = 1, 2, 3, 4), having 2-cyano-3-octyloxy-3-oxo-1-propenyl (COOP) as terminal group and regioregular oligo(3-hexylthiophene) (nHT) as the π-conjugated bridge unit were synthesized. The optical and electrochemical properties of these compounds were systematically investigated. All these four compounds displayed broad absorption bands over 350–600 nm. The optical band gap becomes narrower (from 1.94 to 1.82 eV) and the HOMO energy levels increased (from −5.68 to −5.34 eV) with the increase of the length of the π-conjugated bridge. Organic solar cells using the synthesized compounds as the electron donor and PC61BM as the electron acceptor were fabricated and tested. Results showed that compounds with longer oligothiophene π-bridges have better power conversion efficiency and higher device stability. The device based on the quaterthiophene-bridged compound 4 gave a highest power conversion efficiency of 5.62% with a V OC of 0.93 V, J SC of 9.60 mA·cm−2, and a FF of 0.63.

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