Rational Design of High-Performance Wide-Bandgap (≈2 eV) Polymer Semiconductors as Electron Donors in Organic Photovoltaics Exhibiting High Open Circuit Voltages (≈1 V)

2016 ◽  
Vol 38 (2) ◽  
pp. 1600614 ◽  
Author(s):  
Christos L. Chochos ◽  
Athanasios Katsouras ◽  
Nicola Gasparini ◽  
Chrysanthos Koulogiannis ◽  
Tayebeh Ameri ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
High Performance ◽  
Rational Design ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Electron Donors ◽  
Polymer Semiconductors ◽  
Open Circuit Voltages

High-performance wide-bandgap copolymers with dithieno[3,2-b:2′,3′-d]pyridin-5(4H)-one units

2019 ◽  
Vol 3 (3) ◽  
pp. 399-402 ◽  
Author(s):  
Yaxin Gao ◽  
Dan Li ◽  
Zuo Xiao ◽  
Xin Qian ◽  
Junliang Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Power Conversion ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

Dithieno[3,2-b:2′,3′-d]pyridin-5(4H)-one-based wide-bandgap copolymers gave high open-circuit voltages and decent power conversion efficiencies in nonfullerene organic solar cells.

1,4-Di(3-alkoxy-2-thienyl)-2,5-difluorophenylene: A Building Block Enabling High-Performance Polymer Semiconductors with Increased Open-Circuit Voltages

2018 ◽  
Vol 51 (14) ◽  
pp. 5352-5363 ◽  
Author(s):  
Jianhua Chen ◽  
Zhenglong Yan ◽  
Linjing Tang ◽  
Mohammad Afsar Uddin ◽  
Jianwei Yu ◽  
...  
Keyword(s):  
Building Block ◽  
High Performance ◽  
Open Circuit ◽  
Polymer Semiconductors ◽  
High Performance Polymer ◽  
Open Circuit Voltages

scholarly journals Benzodithiophene-based wide-bandgap small-molecule donors for organic photovoltaics with large open-circuit voltages

2021 ◽  
Vol 88 ◽  
pp. 105996
Author(s):  
Eunhee Lee ◽  
Duyen K. Tran ◽  
Jihun Park ◽  
Wonyoung Ko ◽  
Samson A. Jenekhe ◽  
...  
Keyword(s):  
Small Molecule ◽  
Organic Photovoltaics ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Open Circuit Voltages

2D/3D Perovskite Heterostructures for High Performance and High Open Circuit Voltage in Wide-Bandgap Perovskite Photovoltaics

2019 ◽  
Author(s):  
Ulrich W. Paetzold ◽  
Saba Gharibzadeh ◽  
Marius Jackoby ◽  
Tobias Abzieher ◽  
Somayeh Moghadamzadeh ◽  
...  
Keyword(s):  
High Performance ◽  
Open Circuit Voltage ◽  
Wide Bandgap ◽  
Open Circuit

scholarly journals Efficient wide-bandgap perovskite solar cells enabled by doping a bromine-rich molecule

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Rui He ◽  
Tingting Chen ◽  
Zhipeng Xuan ◽  
Tianzhen Guo ◽  
Jincheng Luo ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Tandem Solar Cells ◽  
Carrier Lifetimes

Abstract Wide-bandgap (wide-E g , ∼1.7 eV or higher) perovskite solar cells (PSCs) have attracted extensive attention due to the great potential of fabricating high-performance perovskite-based tandem solar cells via combining with low-bandgap absorbers, which is considered promising to exceed the Shockley–Queisser efficiency limit. However, inverted wide-E g PSCs with a minimized open-circuit voltage (V oc) loss, which are more suitable to prepare all-perovskite tandem devices, are still lacking study. Here, we report a strategy of adding 1,3,5-tris (bromomethyl) benzene (TBB) into wide-E g perovskite absorber to passivate the perovskite film, leading to an enhanced average V oc. Incorporation of TBB prolongs carrier lifetimes in wide-E g perovskite due to reduction of defects in perovskites and makes a better energy level matching between perovskite absorber and electron transport layer. As a result, we achieve the power conversion efficiency of 17.12% for our inverted TBB-doped PSC with an enhanced V oc of 1.19 V, compared with that (16.14%) for the control one (1.14 V).

Ladder-type dithienocyclopentadibenzothiophene-cored wide-bandgap polymers for efficient non-fullerene solar cells with large open-circuit voltages

2019 ◽  
Vol 7 (7) ◽  
pp. 3307-3316 ◽  
Author(s):  
Qisheng Tu ◽  
Changquan Tang ◽  
Qingdong Zheng
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Open Circuit Voltages ◽  
Excellent Stability

Novel wide-bandgap copolymers based on ladder-type dithienocyclopentadibenzothiophene were developed for polymer solar cells with 9.46% efficiency and excellent stability.

scholarly journals A relatively wide-bandgap and air-stable donor polymer for fabrication of efficient semitransparent and tandem organic photovoltaics

2019 ◽  
Vol 116 (44) ◽  
pp. 22037-22043 ◽  
Author(s):  
Mohammad Mahdi Tavakoli ◽  
Riccardo Po ◽  
Gabriele Bianchi ◽  
Alessandra Cominetti ◽  
Chiara Carbonera ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Butyric Acid ◽  
Organic Photovoltaics ◽  
Acid Methyl Ester ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Monolayer Graphene ◽  
Acid Methyl ◽  
Wide Range ◽  
Butyric Acid Methyl Ester

Organic photovoltaics (OPVs) have attracted tremendous attention in the field of thin-film solar cells due to their wide range of applications, especially for semitransparent devices. Here, we synthesize a dithiaindacenone-thiophene-benzothiadiazole-thiophene alternating donor copolymer named poly{[2,7-(5,5-didecyl-5H-1,8-dithia-as-indacenone)]-alt-[5,5-(5′,6′-dioctyloxy-4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)]} (PDTIDTBT), which shows a relatively wide bandgap of 1.82 eV, good mobility, and high transmittance and ambient stability. In this work, we fabricate an OPV device using monolayer graphene as top electrode. Due to the stability of PDTIDTBT in air and water, we use a wet transfer technique for graphene to fabricate semitransparent OPVs. We demonstrate OPVs based on the PDTIDTBT:Phenyl-C61/71-butyric acid methyl ester (PCBM) blend with maximum power conversion efficiencies (PCEs) of 6.1 and 4.75% using silver and graphene top electrodes, respectively. Our graphene-based device shows a high average visible transmittance (AVT) of 55%, indicating the potential of PDTIDTBT for window application and tandem devices. Therefore, we also demonstrate tandem devices using the PDTIDTBT:Phenyl-C61-butyric acid methyl ester (PC60BM) blend in both series and parallel connections with average PCEs of 7.3 and 7.95%, respectively. We also achieve a good average PCE of 8.26% with an average open circuit voltage (Voc) of 1.79 V for 2-terminal tandem OPVs using this blend. Based on tandem design, an OPV with PCE of 6.45% and AVT of 38% is demonstrated. Moreover, our devices show improved shelf life and ultraviolet (UV) stability (using CdSe/ZnS core shell quantum dots [QDs]) in ambient with 45% relative humidity.

Design of a New Fused-Ring Electron Acceptor with Excellent Compatibility to Wide-Bandgap Polymer Donors for High-Performance Organic Photovoltaics

2018 ◽  
Vol 30 (26) ◽  
pp. 1800403 ◽  
Author(s):  
Wenrui Liu ◽  
Jianyun Zhang ◽  
Zichun Zhou ◽  
Dongyang Zhang ◽  
Yuan Zhang ◽  
...  
Keyword(s):  
Electron Acceptor ◽  
Organic Photovoltaics ◽  
High Performance ◽  
Wide Bandgap ◽  
Fused Ring ◽  
Wide Bandgap Polymer

Ternary organic solar cells: using molecular donor or acceptor third components to increase open circuit voltage

2019 ◽  
Vol 43 (26) ◽  
pp. 10442-10448 ◽  
Author(s):  
Sergey V. Dayneko ◽  
Arthur D. Hendsbee ◽  
Jonathan R. Cann ◽  
Clément Cabanetos ◽  
Gregory C. Welch
Keyword(s):  
Solar Cells ◽  
Organic Photovoltaics ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Power Conversion ◽  
Open Circuit ◽  
Molecular Semiconductors ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

The addition of donor or acceptor type molecular semiconductors to PBDB-T:PC60BM based organic photovoltaics leads to increases in open circuit-voltages and overall power conversion efficiencies.

High-performance nonfullerene polymer solar cells based on a fluorinated wide bandgap copolymer with a high open-circuit voltage of 1.04 V

2017 ◽  
Vol 5 (42) ◽  
pp. 22180-22185 ◽  
Author(s):  
Yan Wang ◽  
Qunping Fan ◽  
Xia Guo ◽  
Wanbin Li ◽  
Bing Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Loss ◽  
Small Molecule ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Wide Bandgap ◽  
Open Circuit

Nonfullerene polymer solar cells based on a polymer donor PM6 containing a fluorinated-thienyl benzodithiophene unit and a small molecule acceptor ITIC showed a PCE of 9.7% with a Voc of up to 1.04 V and an energy loss as low as 0.51 eV.

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