Organic photovoltaics (OPVs) are an emerging solar cell technology that is cost-effective 1,2,3, lightweight 4,5 and flexible 4,6,7,8.Moreover, owing to their energy-efficient production and non ...
1 Introduction As energy demands in the world keep increasing, developing renewable and sustainable energy has become a hot research topic in recent decades. Organic solar cells (OSCs) owning advantages of low cost, lightweight, flexible, semitransparent, and
Organic semiconductors offer the advantage of high optical absorption and tunable energy levels, enabling thin-film solar cells with high light-to-electron conversion efficiencies over a wide ...
Non-fullerene acceptors (NFAs) have recently emerged as pivotal materials for enhancing the efficiency of organic solar cells (OSCs). To further advance OSC efficiency, precise control over the energy levels of NFAs is imperative, …
1 Introduction In the past decades, organic solar cells (OSCs) have attracted substantial attention due to their merits of light weight, large-area solution processability, and flexibility. [1-4] The power conversion efficiency (PCE) of OSCs has witnessed rapid progress with the development of donor and acceptor materials, device engineering, and in-depth mechanism investigations.
During past several years, the photovoltaic performances of organic solar cells (OSCs) have achieved rapid progress with power conversion efficiencies (PCEs) over 18%, demonstrating a great practical application prospect. The development of material science including conjugated polymer donors, oligomer-like organic molecule donors, fused and …
Considering rare researches on wide-bandgap nonfullerene acceptors for ternary organic solar cells (OSCs), we reported a small molecule acceptor ITCN as the second acceptor for constructing PM6/Y6/ITCN ternary devices with better photovoltaic performance in this work. ITCN exhibits a large bandgap of 2.19 eV and a higher LUMO (the lowest …
Open-circuit voltage (V OC) in organic solar cells (OSCs) is currently still not well-understood. A generally acceptable view is that V OC is mainly determined by the energy …
Reducing the energy level offset is one of the key elements of low open-circuit voltage loss in organic solar cells. However, the origin of charge separation driving force at negligible energy level offsets still remains unexplained. Herein, from the perspective of built-in potential caused by charge accumulation, we discuss the nonequilibrium energy level …
Solution-processability at low temperatures, semitransparency, flexibility, and low weight make organic solar cells (OSCs) attractive candidates for future applications. [1, 2] Both the invention of the bulk heterojunction (BHJ) concept for the active layer morphology, [3, 4] and the introduction of nonfullerene acceptors (NFAs) [5-11] resulted in tremendous improvements in device …
Nature Energy - Organic solar cells processed from green solvents are easier to implement in manufacturing yet their ... MPP stability test of unencapsulated OSCs based on PM6:Y6 (PX), PM6:Y6 : 20 ...
Organic solar cells (OSCs) have a very low environmental footprint and are projected to become the most affordable source of solar energy 1.However, the commercial success of OSCs has long been ...
Additive-assisted layer-by-layer deposition creates a bulk p-i-n structure and vertically segregated fibril network morphology in the active layer of organic solar cells. This morphology optimizes exciton and carrier diffusion, thereby reducing recombination losses. Additionally, the micron-scale wrinkle-patterned morphology enhances the light capture …
Ternary organic solar cells (TOSC) are currently under intensive investigation, recently reaching a record efficiency of 17.1%. The origin of the device open-circuit voltage (VOC), already a multifaceted issue in binary OSC, is even …
Organic solar cells (OSCs) based on polymer donor and non-fullerene acceptor achieve power conversion efficiency (PCE) more than 19% but their poor absorption below 550 nm restricts the harvesting of high-energy photons. In contrast, wide bandgap all-inorganic ...
Energy levels and energy level alignment at interfaces play a decisive role in designing efficient and stable organic solar cells (OSCs). In this review two usually used technologies in organic photovoltaic communities for measuring energy levels of organic ...
Abstract: The open-circuit voltage (V OC) of the organic photovoltaic (OPV) cell is one of the key parameters to determine the power-conversion efficiency of the OPV cell. In this work, the …
1. Introduction In recent decades, organic solar cell (OSC) has emerged as one of the most promising photovoltaic technologies due to its advantages like solution-based manufacturing process, lightweight, mechanical flexibility and low energy payback time (Di Carlo Rasi and Janssen, 2019, Han et al., 2021, Heeger, 2014, Lu et al., 2015).
Donor–acceptor systems with low energy-level offset enable high power efficiency in organic solar cells yet it is unclear what drives charge generation. Classen et al. show that long exciton ...
Tailoring the interface energetics between a polymeric hole extraction layer (HEL) and a photoactive layer (PAL) in organic photovoltaics (OPVs) and organic–inorganic hybrid perovskite solar cells (PrSCs) is very important to maximize open circuit voltage (Voc), power conversion efficiency (PCE), and device
High performance and high stability are the urgent requirement for the potential commercial application of organic solar cells (OSCs). Electrode buffer layers have important influence on the photovoltaic performance and stability of OSCs. In this study, non-fullerene bulk heterojunction OSCs were prepared with molybdenum oxide (MoO3) as the first anode buffer …
The power conversion efficiencies of organic solar cells (OSCs) have reached over 19%. However, ... complementary absorption in near infrared region and suitable energy levels with polymer donors 1,2.
In organic solar cells (OSCs), both charge generation and charge recombination occur at the donor (D)–acceptor (A) interfaces. Therefore, the energy level alignment (ELA) at …
6 · The high non-radiative energy loss is a bottleneck issue for efficient organic solar cells. Here, the authors regulate the charge transfer state disorder and rate of back charge transfer …
(LUMO) energy levels of L8-S9 were 5.76 and 3.88 eV, respectively, which are slightly lower than those of L8-BO and could lead to the formation of an energy cascade to facilitate efficient exciton dissociation and charge transfer. The energy levels of all samples
Precise determination of the so-called pinning energies, one of the critical characteristics of the material to predict the energy level alignment (ELA) at either …
6 · The interfacial energy level mismatch between the functional layers of perovskite solar cells (PSCs), especially between the perovskite layer (PVK) and the hole transport layer (HTL), is a major issue restricting the enhancement of performance of PSCs. In this study, [6], [6]-phenyl C61-butyric acid methyl ester (PCBM), a fullerene derivative, is introduced to modulate the …
1 Introduction Replacing fullerene acceptors with strongly-absorbing dyes led to an approximately twofold increase of the power conversion efficiency (PCE) of organic solar cells (OSCs). [1, 2] At present, OSCs based on small molecule non-fullerene acceptors (NFAs), blended with donor polymers, have certified power conversion efficiencies up to 17.9% for …
A minimal non-radiative recombination loss for efficient non-fullerene all-small-molecule organic solar cells with a low energy loss of 0.54 eV and high open-circuit voltage of 1.15 V. J. Mater. Chem.
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 substituting the acceptor group in …
We built the dataset based on non-fullerene ternary organic solar cells (OSCs), and used machine-learning (ML) technology to evaluate the energy-level alignment, predict devices performance, and capture the high-performance non-fullerene ternary combinations. Important understanding regarding the relationship between molecular energy-level alignment …
Organic solar cells, despite their high power conversion efficiencies, suffer from open circuit voltage losses making them less appealing in terms of applications.
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 …
Energy levels and energy level alignment at interfaces play a decisive role in designing efficient and stable organic solar cells (OSCs). In this review two usually used technologies in organic photovoltaic communities for …
We built the dataset based on non-fullerene ternary organic solar cells (OSCs), and used machine-learning (ML) technology to evaluate the energy-level alignment, predict devices performance, and capture the high …
How the charge-neutrality level of interface states controls energy level alignment in cathode contacts of organic bulk-heterojunction solar cells. ACS Nano 6, 3453–3460 (2012). Article CAS ...
The exigency for sustainable and clean energy resources has led to profound research in development of various generations of solar cells, aiming to control the over-exploitation of fossil fuels and subsequently limit environmental degradation. Among the fast-emerging third-generation solar cells, polymer solar cell technology has gained much …
Organic semiconducting materials exhibit great synthetic flexibility, which allows for excellent tunability over the bandgap, energy level, and carrier mobility, offering great potential in the ...
Self-assembled monolayers are essential for achieving high performance solar cells by minimizing interfacial energy losses. Here, authors the develop a co-adsorb strategy with a small molecule to ...
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