Topics

Realizing Efficient Charge/Energy Transfer and Charge Extraction in Fullerene-free Organic Photovoltaics via a Versatile Third Component.

08:00 EDT 12th July 2019 | BioPortfolio

Summary of "Realizing Efficient Charge/Energy Transfer and Charge Extraction in Fullerene-free Organic Photovoltaics via a Versatile Third Component."

Solution-processed organic photovoltaics (OPVs) based on bulk-heterojunctions have gained significant attention to alleviate the increasing demend of fossil fuel in past two decades. OPVs combined of a wide bandgap polymer donor and a narrow bandgap non-fullerene acceptor show potential to achieve high performance. However, there are still two reasons to limit the OPVs performance. One, although this combination can expand from ultraviolet to near infrared region, the overall external quantum efficiency of device suffers low values. The other one is the low open-circuit voltage (VOC) of devices resulting from the relatively downshifted lowest unoccupied molecular orbital (LUMO) of the narrow bandgap. Herein, the approach to select and incorporate a versatile third component into the active layer is reported. A third component with bandgap larger than that of the acceptor, and absorption spectra and LUMO levels lying within that of the donor and acceptor is demonstrated to be effective conquer these issues. As a result, the power conversion efficiencies (PCEs) are enhanced by the elevated short-circuit current and VOC; the champion PCE are 11.1% and 13.1% for PTB7-Th:IEICO-4F based and PBDB-
T:
Y1 based solar cells, respectively.

Affiliation

Journal Details

This article was published in the following journal.

Name: Nano letters
ISSN: 1530-6992
Pages:

Links

DeepDyve research library

PubMed Articles [14465 Associated PubMed Articles listed on BioPortfolio]

Ultrafast photoinduced energy and charge transfer.

After presenting the basic theoretical models of excitation energy transfer and charge transfer, I describe some of the novel experimental methods used to probe them. Finally, I discuss recent results...

Theoretical Study of the Charge Transfer Exciton Binding Energy in Semiconductor Materials for Polymer:Fullerene Based Bulk Heterojunction Solar Cells.

Recent efforts and progress in polymer solar cells have boosted the photovoltaic efficiency of the technology. This efficiency depends not only on the device architecture but also on the materials pro...

Strong Charge Transfer at 2H-1T Phase Boundary of MoS for Superb High-Performance Energy Storage.

Transition metal dichalcogenides exhibit several different phases (e.g., semiconducting 2H, metallic 1T, 1T') arising from the collective and sluggish atomic displacements rooted in the charge-lattice...

Efficient Visible-to-NIR Spectral Conversion for Polycrystalline Si Solar Cells and Revisiting the Energy Transfer Mechanism from Ce to Yb in LuAlO Host.

The so-called Shockley-Queisser converting efficiency limit of Si solar cells is believed to be surpassed by using the spectral converter. However, searching for efficient spectral converting material...

An Energy-Gap Law for Photocurrent Generation in Fullerene-based Organic Solar Cells - The Case of Low-Donor Content-Blends.

The involvement of charge-transfer (CT) states in the photogeneration and recombination of charge carriers has been an important focus of study within the organic photovoltaic community. In this work,...

Clinical Trials [4086 Associated Clinical Trials listed on BioPortfolio]

Increasing Exercise Adherence After Percutaneous Coronary Intervention With the Fitbit Charge HR Device

Design: Single center, prospective, randomized study that will compare activity levels in patients who complete cardiac rehabilitation after clinically indicated percutaneous coronary inte...

Validation of Two Wrist-worn Devices for the Assessment of Energy Expenditure in Cardiac Patients.

Improving physical activity is a core component of secondary prevention and cardiac (tele)rehabilitation. Commercially available activity trackers are frequently used to monitor and promot...

Physical Activity Monitored by Fitbit Charge 2 in Improving Quality of Life in Participants With Recurrent Ovarian, Primary Peritoneal, or Fallopian Tube Cancer

This phase II trial studies how well physical activity monitored by Fitbit Charge 2 works in improving quality of life in participants with ovarian, primary peritoneal, or fallopian tube c...

Clinical and Molecular Study of CHARGE Syndrom

1. Clinical description of a French cohort of patients with CHARGE syndrome. 2. Search any phenotype-genotype correlation in typical, atypical or incomplete form of the syndrome ...

Charge Transparency in Critical Care Practice and Its Effects on Overall Cost of Care

To investigate the effects of the availability of daily patient-related charges on ordering patterns of health care ordering providers and cost containment in the Intensive Care Unit (ICU)...

Medical and Biotech [MESH] Definitions

An atom or group of atoms that have a positive or negative electric charge due to a gain (negative charge) or loss (positive charge) of one or more electrons. Atoms with a positive charge are known as CATIONS; those with a negative charge are ANIONS.

Rare disease characterized by COLOBOMA; CHOANAL ATRESIA; and abnormal SEMICIRCULAR CANALS. Mutations in CHD7 protein resulting in disturbed neural crest development are associated with CHARGE Syndrome.

The transfer of energy of a given form among different scales of motion. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed). It includes the transfer of kinetic energy and the transfer of chemical energy. The transfer of chemical energy from one molecule to another depends on proximity of molecules so it is often used as in techniques to measure distance such as the use of FORSTER RESONANCE ENERGY TRANSFER.

The accumulation of an electric charge on a object

The ability of a substrate to retain an electrical charge.

Quick Search


DeepDyve research library

Searches Linking to this Article