Heger organic photovoltaics

Physical insights into non-fullerene organic photovoltaics

Non-fullerene acceptors have boosted the development of organic photovoltaics. This Review highlights the photophysics and device physics of non-fullerene organic photovoltaics, including exciton

Organic photovoltaics: A journey through time, advancements,

This comprehensive study explores the realm of organic photovoltaics, a pivotal green energy technology, tracing its journey from early theoretical concepts to its current status as a promising avenue for sustainable energy production. The research meticulously examines the series of developmental milestones in the conversion of solar energy into electrical power, with

Efficiency of bulk-heterojunction organic solar cells

The initiative "International Summits on Organic Photovoltaic Stability" (ISOS) has supported efforts to investigate and improve OPV stability by establishing standard testing protocols and initiating focused research efforts on organic solar cell degradation. Although several studies indicate that a clever design of photoactive materials

Organic Photovoltaics

Organic photovoltaics (OPV) describes a group of technologies wherein the active layer of a solar cell is composed of hydrocarbon-based organic materials [1–3].OPV occupies a special niche among solar energy technologies in that it could potentially satisfy the growing energy needs of the world with a product that is sustainable, elementally abundant, and

Advances in organic photovoltaic cells: a comprehensive review

The various parts of OPV cells are discussed, and their performance, efficiency, and electrical characteristics are reviewed. A detailed SWOT analysis is conducted, identifying promising

Liquid crystals in photovoltaics: a new generation of organic

Liquid crystals (LCs) have recently gained significant importance in organic photovoltaics (PVs). Power-conversion efficiency up to about 10% has reached in solar cells incorporating LCs. This

Recent advances in organic solar cells: materials, design, and

Organic solar cells have emerged as promising alternatives to traditional inorganic solar cells due to their low cost, flexibility, and tunable properties. This mini review introduces a novel perspective on recent advancements in organic solar cells, providing an overview of the latest developments in materials, device architecture, and performance optimization. In

Graded bulk-heterojunction enables 17% binary organic solar

Graded bulk-heterojunction organic solar cell with well-defined vertical phase separation has the potential to surpass the classical counterpart, thus the optimisation of this structure is crucial

Organic Photovoltaics over Three Decades

For the last three decades, the author has worked with organic photovoltaic materials and devices, in an effort to make cheap organic photovoltaic systems suitable for powering the Earth from sunligh... Abstract The development of organic semiconductors for photovoltaic devices, over the last three decades, has led to unexpected performance for

Chinese Journal of Chemistry

The morphology of the active layer plays a crucial role in the performance of organic photovoltaics. Although volatile additives are commonly used to manipulate the morphology, their mechanism of action remains poorly understood. In this study, we conducted a systematic exploration of the mechanism of the traditional volatile additive 1-CN in

Organic photovoltaics: the path to lightweight, flexible and

Research on organic photovoltaics (OPV) boomed between 2005 and 2015, says Osaka, but recent years have seen waning interest, especially in industry. The reasons are varied, but some factors are a

Organic Photovoltaics Research | Department of Energy

Organic photovoltaics have achieved efficiencies near 11%, but efficiency limitations as well as long-term reliability remain significant barriers. Unlike most inorganic solar cells, OPV cells use molecular or polymeric absorbers, which results in a localized exciton. The absorber is used in conjunction with an electron acceptor, such as a

Roles and Impacts of Ancillary Materials for Multi‐Component

Ancillary components: This Minireview highlights the updated roles and impacts of ancillary components in blend organic photovoltaics (OPVs).Ancillary component engineering demonstrates an effective strategy to improve the efficiency and stability of devices. Based on current understanding of the key factors in blend OPVs, the detailed roles of ancillary

Highly Efficient Layer-by-Layer Organic Photovoltaics Enabled by

In this work, layer-by-layer organic photovoltaics (LbL OPVs) were prepared by sequentially spin-coating PM1 and L8-BO solutions. The solvent additive 1,8-diiodooctane (DIO), which has a high boiling point, and solid additive l,3,5-trichlorobenzene (TCB), which has a high volatile, were deliberately selected to incorporate with the L8-BO solutions. The power

Organic Photovoltaic Devices | SpringerLink

The parameters in the equation above are exhibited in Fig. 5.4.The value of PCE is calculated from three parameters: short-circuit current density (J SC), open-circuit voltage (V OC), and fill factor (FF).P m stands for the maximum power point, and P in is the incident light power. J SC is the current density of devices when there is 0 V of applied bias on the two electrodes.

Recent progress of indoor organic photovoltaics

Owing to the prosperity of the internet of things (IoTs), indoor organic photovoltaic (IOPV) devices with substantial merits (e.g., light weight, portability, flexibility, semitransparency, operational stability) are emerging as reliable indoor photon harvesters to drive low-power electronic devices. In such cases, the effective utilization of

Hexanary blends: a strategy towards thermally stable organic photovoltaics

Baran, D. et al. Reducing the efficiency–stability–cost gap of organic photovoltaics with highly efficient and stable small molecule acceptor ternary solar cells. Nat. Mater. 16, 363–369 (2017).

Harmonizing organic photovoltaics research and development

Organic photovoltaics (OPVs) are flexible and lightweight thin-film devices that convert light into electricity and can be solution processed. Such devices consist of two electrodes and additional functional blocking layers sandwiching a light-converting layer. Each layer is very thin ranging from a few tens of nanometers up to a few micrometers.

Long‐term outdoor study of an organic photovoltaic module for

Organic photovoltaics (OPV) has attracted tremendous attention as a promising alternative to silicon wafer-based technologies for building integration. While significant progress has been achieved on the power conversion efficiency of OPV technologies, their field stability is rarely studied. This work investigates the field performance and

Fundamentals of bulk heterojunction organic solar cells: An

An ideal photovoltaic device should possess a consistent performance during its operational lifetime; however, organic semiconductors are often regarded as inherently unstable when they are subjected to the cyclic environmental changes [10].Undoubtedly, significant degradation pathways have been posited to occur at virtually every layer and interface of OSC

Transparent organic photovoltaics: A strategic niche to advance

Historically organic photovoltaics (OPVs) have held the promise of low-cost synthetic materials and cost-effective roll-to-roll (R2R) production. 1 Low capital investment, rapid continuous production, and inexpensive materials have created the expectation of OPV to generate competitive costs for electrical production and low energy payback periods. 2 This

Composition–Morphology Correlation in PTB7-Th/PC

Characteristics of Non-Fullerene Acceptor-Based Organic Photovoltaic Active Layers Using X-ray Scattering and Solid-State NMR. The Journal of Physical Chemistry C 2021, 125 (29) Volker Körstgens, Nitin Saxena, Nian Li, Christoph Bilko, Sebastian Grott, Wei Chen, Xinyu Jiang, Julian Eliah Heger, Sigrid Bernstorff, Peter Müller-Buschbaum.

Advancing optoelectronic performance of organic and perovskite

Six novel carbazole-based hole-transporting materials (HTMs) (DBC1–DBC6) have been meticulously engineered through structural modifications of the reference molecule R. These tailored molecules were designed by introducing thiophene-bridged and end-capped acceptor groups. A comprehensive analysis of critical characteristics, including frontier molecular

Roles and Impacts of Ancillary Materials for

Organic Photovoltaics'' New Renaissance: Advances Toward

Non-fullerene acceptors (NFAs) have recently breathed new life into organic photovoltaic (OPVs), achieving breakthrough photovoltaic conversion efficiencies. Unlike conventional fullerene acceptors, they offer strong levels of tunability and solution-processibility that allow them to be easily exploited in the roll-to-roll (R2R) fabrication

Heger organic photovoltaics [PDF]

6 FAQs about [Heger organic photovoltaics]

Are organic solar cells based on bulk heterojunction better?

In the last few years, the performance of organic solar cells (OSCs) based on bulk heterojunction (BHJ) structure has remarkably improved. However, for a large scale roll to roll (R2R) manufacturing of this technology and precise device fabrication, further improvements are critical.

Can bulk heterojunction architecture improve the efficiency of organic photovoltaic solar cells?

Nature Communications 3, Article number: 1043 (2012) Cite this article Recently, much effort has been devoted to improve the efficiency of organic photovoltaic solar cells based on blends of donors and acceptors molecules in bulk heterojunction architecture.

Does organic photovoltaic technology have low power conversion efficiency?

Nature Reviews Electrical Engineering 1, 581–596 (2024) Cite this article Organic photovoltaic (OPV) technology is flexible, lightweight, semitransparent and ecofriendly, but it has historically suffered from low power conversion efficiency (PCE).

Are bulk heterojunction devices more efficient than inorganic photovoltaic devices?

A more general approach assuming device operation close to the Shockley–Queisser-limit leads to even higher efficiencies. Bulk heterojunction devices exhibiting only radiative recombination of charge carriers could be as efficient as ideal inorganic photovoltaic devices. 1. Introduction

How efficient are large-area organic photovoltaic modules?

Prog. Photovoltaics Res. Appl. 29, 24–31 (2021). Basu, R. et al. Large-area organic photovoltaic modules with 14.5% certified world record efficiency. Joule 8, 970–978 (2024). This article demonstrates the fabrication of state-of-the-art large-area, high-efficiency organic photovoltaic modules.

What is organic photovoltaics (OPV)?

Her research interests lie in fundamental questions in physics and chemistry within the context of real applications. Organic photovoltaics (OPV) is an emerging technology that combines semi-transparency and flexibility in lightweight, ultrathin solar modules. The record power conversion efficiencies for OPV are a...

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