Molecular solar cells
In organic solar cells, the charge-transfer (CT) electronic states that form at the interface between the electron-donor (D) and electron-acceptor (A) materials have a crucial role in exciton ...
In organic solar cells, the charge-transfer (CT) electronic states that form at the interface between the electron-donor (D) and electron-acceptor (A) materials have a crucial role in exciton ...
In organic solar cells, the charge-transfer (CT) electronic states that form at the interface between the electron-donor (D) and electron-acceptor (A) materials have a crucial role in exciton ...
With the development of various materials in perovskite solar cells, self-assembled monolayers (SAMs) have rapidly become an important factor in improving power conversion efficiency (PCE) due to their unique …
Organic solar cells (OSCs)—promising alternatives to traditional inorganic solar cells—have many features that make them key players in a greener future. One of these features is tunable chemistry, which allows scientists to precisely adjust or modify the properties of chemical systems to achieve desired outcomes. Now, researchers from Japan have tuned …
All-polymer solar cells (all-PSCs) based on polymerized small molecular acceptors (PSMAs) have made significant progress recently. Here, we synthesize two A-DA''D-A small molecule acceptor based ...
Furthermore, modifications to the inner or outer alkyl chains on the backbone and functionalization of the terminal groups can exert a substantial influence on the performance of molecules, 27, 41 – 46 resulting in power conversion efficiencies (PCEs) over 19% in organic solar cells (OSCs). 47 – 52 Such advancements exhibit tremendous ...
High-performance organic solar cells call for novel designs of acceptor molecules. Here, He et al. design and synthesize a non-fullerene acceptor with an asymmetric structure for diverse donor ...
4 · Research on organic solar cells has been conducted for a long time. Recent advancements in understanding their molecular structures are now paving the way for the development of highly efficient ...
One approach for improving the power conversion efficiencies (PCEs) of inverted perovskite solar cells (PSCs) has been to use self-assembled monolayers (SAMs), such as [2-(9H-carbazol-9-yl)ethyl]phosphonic acid (2PACz) and its derivatives, as hole transport materials (HTMs) (1, 2).The main reasons why SAMs enhance PCEs compared with commonly …
The record efficiency of single-junction CIGS solar cells has reached 23.4%, which makes this class of solar cells very attractive for integration into perovskite containing tandem solar cells 26.
The interfaces in perovskite solar cells are critical to the device performance. Li et al. tune the bond strength of the interfacial molecule with the perovskite and the electron transport layer ...
This Review summarizes the types of materials used in the photoactive layer of solution-processed organic solar cells, discusses the advantages and disadvantages of …
The energy level alignment at the donor/acceptor (D/A) interface is dictated by intrinsic surface dipoles, a characteristic influenced by molecular packing arrangements [49], [50].Furthermore, the energy level offset between donor and acceptor plays a key role in determining the driving force for charge-transfer (CT) states and, consequently, the efficiency …
All-small-molecule organic solar cells (all-SMOSCs) have attracted tremendous attention on account of their special merits of easy purification, well-defined molecular structures, and better molecular repeatability compared with polymer solar cells (PSCs). However, the reported PCEs of state-of-the-art all-SMOSCs still lag far behind their …
A new polymer donor (PBDB-T-SF) and a new small molecule acceptor (IT-4F) for fullerene-free organic solar cells (OSCs) were designed and synthesized. The influences of fluorination on the absorption spectra, …
Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189 P. R. China. Search for more papers by this author. Prof. Dr. Gui-Fu Zou, ... ferroelectric …
The morphological characteristics of the active layer in organic solar cells (OSCs), encompassing phase separation structure, domain sizes, crystallinity and molecular …
Non-fullerene acceptors have contributed hugely to the best-performing organic solar cells, yet the photo-degradation remains a hurdle preventing the practical application. In this work, research ...
Nonradiative recombination losses occurring at the interface pose a significant obstacle to achieve high-efficiency perovskite solar cells (PSCs), particularly in inverted PSCs. Passivating surface defects using molecules with different functional groups represents one of the key strategies for enhancing PSCs efficiency.
Du, J. et al. Polymerized small molecular acceptor based all-polymer solar cells with an efficiency of 16.16% via tuning polymer blend morphology by molecular design. Nat. Commun. 12, 5264 (2021).
Abstract Organic solar cells (OSCs) have been developed for few decades since the preparation of the first photovoltaic device, ... Beijing National Laboratory for Molecular, Sciences CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China.
Specifically, lower molecular weight of PTQ10 is associated with a higher number of traps in the active layer. As expected, solar cells with medium and low PTQ10 M n show an increment of the ideality factor with the PAL thickness. The ideality factor of solar cells with high PTQ10 M n is closer to the unit than solar cells with low and medium ...
Small-molecular organic solar cells usually exhibited unsatisfactory device stability, which might originate from their molecular diffusion behaviors. Herein, based on the all-small-molecule …
Over past two decades, organic photovoltaics (OPVs) with unique advantages of low cost and flexibility meet significant development opportunities and the official world record for the power conversion efficiency …
Dye-sensitized solar cells (DSSCs) belong to the group of thin-film solar cells which have been under extensive research for more than two decades due to their low cost, simple preparation methodology, low toxicity and ease of production. Still, there is lot of scope for the replacement of current DSSC materials due to their high cost, less abundance, and long-term stability. The …
We propose the utilization of an aniline-derived molecule, namely 2-methoxy-5-trifluoromethylaniline (MFA), as an additive for the fabrication of CsPbI 3-x Br x solar cells. The incorporation of MFA into the perovskite film can effectively enhance the energy barrier for defect formation and ion migration.
Controlling the packing feature and film morphology of active layers is the precondition for achieving highly efficient organic solar cells (OSCs). The growth transition of donors and acceptors from solution to solid films plays an intrinsic role in shaping these features.
Moreover, the V OC of organic solar cells is related to the difference between the lowest unoccupied molecular orbital (LUMO) of the acceptor and the highest occupied molecular orbital (HOMO) of the donor, that is, the greater the difference is, the bigger the V OC is. 50 Due to the lower LUMO of N2200 compared with the one of ITIC-Th (Figure ...
In the last few decades, organic solar cells (OSCs) have drawn broad interest owing to their advantages such as being low cost, flexible, semitransparent, non-toxic, and ideal for roll-to-roll large-scale processing. Significant advances have been made in the field of OSCs containing high-performance active layer materials, electrodes, and interlayers, as well as …
Universal energy level tailoring of self-organized hole extraction layers in organic solar cells and organic–inorganic hybrid perovskite solar cells
In this manuscript, we review the progress and design principles of the molecular compounds for perovskite solar cells. The molecular design strategies that consider the A-site cations, additive molecules, solvent molecules, and surface adsorbates are explained, followed by a discussion on the molecular design at different perovskite-related ...
[2-6] Compared with the conventional silicon-based solar cells and the emerged perovskite solar cells, OSCs demonstrate unique preponderance in the strength of low cost, flexibility, translucence, and light …
The molecular structure of photosensitizers and redox mediators can control the V loss of solar cells via molecular engineering. On this basis, for the first time Michael Grätzel et al. reported metal-free organic dyes 62 and 63 for ss-DSSC applications and reported a high PCE of 11.7 %.
Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing, 211189 P. R. China. Search for more papers by this author. Prof. Dr. Gui-Fu Zou, ... ferroelectric was incorporated into a perovskite film to enlarge the built-in electric field of the perovskite solar cell (PSC), thereby facilitating ...
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