What are the donors for solar cells
The performance of donor-acceptor (DA) organic solar cells based on the bulk-heterojunction (BHJ) concept 1,2 has been improving rapidly 3,4,5,6,7,8,9,10, as a result of the development of high ... - Download [PDF]
Increasing donor-acceptor spacing for reduced voltage loss in …
The performance of donor-acceptor (DA) organic solar cells based on the bulk-heterojunction (BHJ) concept 1,2 has been improving rapidly 3,4,5,6,7,8,9,10, as a result of the development of high ...
Isomerization of Benzothiadiazole Yields a Promising Polymer Donor …
The exploration of high-performance and low-cost wide-bandgap polymer donors remains critical to achieve high-efficiency nonfullerene organic solar cells (OSCs) beyond current thresholds. Herein, the 1,2,3-benzothiadiazole (iBT), which is an isomer of 2,1,3-benzothiadiazole (BT), is used to design wide-bandgap polymer donor PiBT.
End‐Group Engineering of Chlorine ...
End-Group Engineering of Chlorine-Trialkylsiylthienyl Chain-Substituted Small-Molecule Donors for High-Efficiency Ternary Solar Cells. Jing Li, Jing Li. Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), Xi''an, 710072 P. R. China ... architecture has been widely demonstrated as a facile and efficient strategy ...
Single-bond-linked oligomeric donors for high performance organic solar ...
The effective design and synthesis of novel small-molecule donors (SMDs) is extremely essential for the in-depth study of the scientific problems of bulk heterojunction morphology and the improvement of photovoltaic performance in …
End‐Group Engineering of Chlorine ...
Ternary architecture has been widely demonstrated as a facile and efficient strategy to boost the performance of organic solar cells (OSCs). However, the rational design of the third component with …
Advantages, challenges and molecular design of different ...
This Review summarizes the types of materials used in the photoactive layer of solution-processed organic solar cells, discusses the advantages and …
Revisiting the Dithienophthalimide Building Block: Improved …
Imide-functionalized arenes have been one of the most promising acceptor (A) units in organic solar cells (OSCs). However, dithienophthalimide (DPI), a hybrid of thieno-[3,4-c]pyrrole-4,6-dione (TPD) and bithiophene imide (BTI) units, has not been revisited since its first synthesis, likely owing to the high synthetic cost of the reported …
End‐Group Engineering of Chlorine ...
Ternary architecture has been widely demonstrated as a facile and efficient strategy to boost the performance of organic solar cells (OSCs). However, the rational design of the third component with suitable core and end-group modification is still a …
Efficient and thermally stable organic solar cells based on small ...
The organic solar cells are typically based on a binary combination of polymeric donor and molecular acceptor. Here Zhang et al. develop alternative combination based on molecular donor and ...
High efficiency small molecule-based donor materials for organic solar ...
Based on the type of molecular system used, OPV is divided into two classes: polymer-donor solar cells (PDSCs) and small molecule-donor solar cells (SMDSCs). Interestingly, the efficiency of SMDSCs have increased considerably from 0.001% in 1975 [ 7 ], through 1% in 1986 [ 8 ] to > 11.3% in 2017 [ 9, 10 ], which is very …
Donor Materials for Organic Solar Cell (OSC) | SpringerLink
A lot of efforts have been devoted to the donor–acceptor SM structure design for solution processed solar cells due to the diversity of the donors and acceptors. With the different combination of the building blocks, a bunch of donor–acceptor SMs with different structures was prepared.
Open-Shell Donors and Closed-Shell Acceptors in Organic Solar Cells ...
The active materials of organic solar cells are recognized to show a singlet ground state, and their photo-excited states have been widely investigated in previous work. Herein, we disclose the inherent open-shell singlet ground state of all the donors with obvious electron spin resonance signals. In contrast, the well-known highly …
Organic solar cells based on small molecule donor and polymer …
1. Introduction. As a new type of clean energy technology, solar cells have been considered as a good candidate for effectively utilizing solar energy [1] is remarkable that organic solar cells (OSCs), with their well-known advantages of low cost, lightweight, and capability to fabricate flexible large-area devices, have shown great research value …
Theoretical designing of small molecule donors for organic solar …
Designing new small molecule donors is a hot top in organic solar cell research. Theoretical simulations can help in avoiding trial-and-error based designing, …
Efficient wide-band-gap copolymer donors for organic solar cells …
Organic solar cell (OSC) is an interesting type of photovoltaic device which converts solar energy into electricity. ... The two BDT donor polymers were subjected to photonic characterization using UV–vis absorption (Fig. 2). Chloroform solutions containing the two polymers show strong absorption under 600 nm with similar distinctive vibronic ...
Theoretical design and evaluation of efficient small donor …
Context The development of high-efficiency photovoltaic devices is the need of time with increasing demand for energy. Herein, we designed seven small molecule donors (SMDs) with A-π-D-π-A backbones containing various acceptor groups for high-efficiency organic solar cells (OSCs). Molecular engineering was performed by …
The new era for organic solar cells: polymer donors
The new era for organic solar cells: polymer donors. The new era for organic solar cells: polymer donors. The new era for organic solar cells: polymer donors Sci Bull (Beijing). 2020 Sep 15;65(17):1422-1424. doi: 10.1016/j.scib.2020.04.044. Epub 2020 Apr 30. Authors Chunhui Duan 1 ...
Alkoxythiophene‐Directed Fibrillization of Polymer Donor for …
Alkoxythiophene additives are developed to induce the fibrillization of a series of BDT-type polymer donors for organic solar cells, demonstrating generally increased efficiency, with the PM6/L8-BO b...
A Chlorinated π-Conjugated Polymer Donor for Efficient Organic Solar Cells
Polymer solar cells (PSCs) could be fabricated on a large scale using solution processing at low cost, and thus are a promising energy source that can be exploited globally to contribute to worldwide electricity needs. ... We synthesized a chlorinated benzothiadiazole-T4 polymer donor PBT4T-Cl, in which a chlorine atom had …
A low cost and high performance polymer donor material for …
The application of polymer solar cells requires the realization of high efficiency, high stability, and low cost devices. Here we demonstrate a low-cost polymer donor poly[(thiophene)-alt-(6,7 ...
Efficient Charge Transport Enables High Efficiency in …
The donor/acceptor weight ratio is crucial for photovoltaic performance of organic solar cells (OSCs). Here, we systematically investigate the photovoltaic behaviors of PM6:Y6 solar cells with diff...
High-performance multiple-donor bulk heterojunction solar cells …
Broadening the absorption bandwidth of polymer solar cells by incorporating multiple absorber donors into the bulk-heterojunction active layer is an attractive means of resolving the narrow ...
Correlating Aggregation Ability of Polymer Donors with Film …
Film formation kinetics significantly impact molecular processability and power conversion efficiency (PCE) of organic solar cells. Here, two ternary random copolymerization polymers are reported, D18─N-p and D18─N-m, to modulate the aggregation ability of D18 by introducing trifluoromethyl-substituted pyridine unit at para- …
Semicrystalline Unfused Polymer Donors with Backbone …
Herein, a class of low-cost and fully unfused polymer donors with precisely regulated backbone planarity via halogenation was designed and synthesized, …
Electrostatic force promoted intermolecular stacking of polymer donors …
Organic solar cells (OSCs) have attracted enormous attention due to their advantages including light-weight, flexibility, solution processability and semitransparency 1,2,3 recent years, the ...
Donor–acceptor mutually diluted heterojunctions for layer-by …
The photoactive layer of organic solar cells consists of p-type electron donors and n-type electron acceptors, which phase separate to form fine and continuous …