Hybrids and related materials - Page 5

Perovskite/CIGS tandem cell reaches 24.6% efficiency

imec, the world-leading research and innovation hub, recently presented an impressive thin-film tandem solar cell at the EU PVSEC conference. The cell consists of a top perovskite cell developed by imec within the partnerships of EnergyVille and Solliance, and a bottom CIGS cell from the Centre for Solar Energy and Hydrogen Research (ZSW, Stuttgart, Germany). The tandem cell resulting from this collaboration achieves a record efficiency of 24.6%.

imec's 24.6% efficiency perovskite/CIGS tandem solar cell image

The perovskite top cell in the tandem uses light in the visible part of the solar spectrum, while the light in the near-IR spectrum that passes through the perovskite cell is harvested by the underlying CIGS cell. In this way, the tandem cell significantly outperforms the stand-alone perovskite and CIGS cells. Moreover, both perovskite and CIGS cells are thin-film solar cells, paving the way to high efficiency flexible solar cells and building integrated photovoltaic (BIPV) solutions.

Read the full story Posted: Sep 25,2018

Ascent Solar Technologies secures DoE funding for CIGS/perovskite project

Ascent Solar Technologies, a manufacturer of flexible thin-film photovoltaic (PV) solutions, has been selected by the US Department of Energy (DOE), supported by the Office of Technology Transitions (OTT) Technology Commercialization Fund (TCF), for two exclusive development projects.

As part of the awards, worth up to $100,000 each, Ascent Solar is to work towards commercialization of sputtered Zn(O,S) buffers in flexible CIGS solar cells and also development of next-generation, high-efficiency Perovskite/CIGS tandem cell. These projects are part of Ascent Solar's plans for next-generation lightweight and flexible solar cells.

 

Read the full story Posted: Sep 03,2018

CIGS/perovskite solar cell by UCLA reaches 22.4% efficiency

UCLA researchers have recently reported a highly efficient thin-film solar cell with a double-layer design that converts 22.4% of the incoming energy from the sun. The device is made by spraying a thin layer of perovskite onto a commercially available solar cell. The solar cell that forms the bottom layer of the device is made of a compound of copper, indium, gallium and selenide, or CIGS.

The performance was reportedly confirmed in independent tests at the U.S. Department of Energy's National Renewable Energy Laboratory. The UCLA device's efficiency rate is similar to that of the poly-silicon solar cells that currently dominate the photovoltaics market.

Read the full story Posted: Sep 02,2018

Oxford PV receives a €2.8 million grant to prepare perovskite-silicon solar cell production for high volume manufacture

Oxford Photovoltaics (PV) has been awarded a €2.8 million grant from the German Ministry of Economic Affairs and Energy to prepare perovskite-silicon solar cells for high-volume manufacturing. The technology consortium is by headed by Oxford PV and includes specialist PV equipment manufacturer VON ARDENNE and three German institutes, Fraunhofer Institute for Solar Energy Systems, Helmholtz-Zentrum Berlin (HZB) and the Technical University of Berlin.

The newly funded project focuses on the optimization of the perovskite-silicon tandem solar cell architecture, to make further efficiency improvements on industrial 156 mm x 156 mm wafer formats. Importantly, this will include the refinement of industrial scale process technology as well as life-cycle analysis on the social-environmental impact of such cells.

Read the full story Posted: Aug 23,2018

New configuration may offer highly improved efficiency

Researchers from Lahore University and Benha University have proposed an interesting configuration of combination of solar materials that can possibly boost total electricity output by 10-30% ' reportedly reaching between 30-36% efficiency.

The proposed solar configuration image(a)bifacial per/Si double-tandem cell (b)standalone bifacial single-tandem cell (c)PVK cell (d)Si heterojunction with intrinsic thin layer solar cell

The researchers describe the cell: "a 3-T, four-junction perovskite/silicon double-tandem (PSDT) solar cell structure that can efficiently harvest light in all ranges of albedo by stacking two tandem perovskite/silicon cells in a flipped configuration with a common (middle) terminal".

Read the full story Posted: Aug 23,2018

Researchers calculate that a 32% perovskite/silicon tandem cell solar will still be competitive at triple the price

Researchers from Arizona State University's Fulton Schools of Engineering have calculated that a 32% efficient perovskite-silicon tandem cell could produce electricity at the same price as cutting-edge 22% efficient panels in the most cost-competitive of situations.

ASU team finds that a 32% tandem cell solar still competitive at triple the price

The paper specifies: '…a large cost benefit will not necessarily be needed to prefer tandem systems over single-junction systems, because higher efficiencies bring additional perceived benefits such as reduced installation area. It is, however, necessary that the path leading to such a tandem be continuously profitable.'

Read the full story Posted: Aug 08,2018

Imec hits 27.1% efficiency with its new perovskite-silicon tandem PV cell

Imec, the leading research and innovation hub in nanoelectronics, energy and digital technology, within the partnership of EnergyVille, announced a record result for its 4-terminal perovskite/silicon tandem photovoltaic cell. In fact, with a reported power conversion efficiency of 27.1%, the new tandem cell tops the most efficient standalone silicon solar cell. Further careful engineering of the Perovskite material will bring efficiencies over 30% in reach.

Imec's new record tandem cell uses a 0.13 cm2 spin-coated perovskite cell developed within the Solliance cooperation, stacked on top of a 4 cm2 industrial interdigitated back-contact (IBC) silicon cell in a 4-terminal configuration, which is known to have a higher annual energy yield compared to a 2-terminal configuration. Additionally, scaling up the tandem device by using a 4 cm2 perovskite module on a 4 cm2 IBC silicon cell, a tandem efficiency of 25.3% was achieved, surpassing the stand-alone efficiency of the silicon cell.

Read the full story Posted: Jul 25,2018

Oxford PV sets new record with perovskite tandem solar cells with 27.3% conversion efficiency

Oxford Photovoltaics has reported a new perovskite tandem solar cell record, certified by Fraunhofer ISE at a conversion efficiency of 27.3%. Oxford PV's latest record for a 1 cm2 perovskite-silicon tandem solar, reportedly exceeds the 26.7% efficiency world record for a single-junction silicon solar cell.

Oxford PV sets new record with perovskite tandem solar cells with 27.3% conversion efficiency image

Oxford PV recently produced a 1 cm2 perovskite-silicon two-terminal tandem solar cell with a verified conversion efficiency of 25.2%, through an ongoing collaboration with Helmholtz-Zentrum Berlin (HZB) and the Photovoltaics and Optoelectronics Device Group at the University of Oxford, led by Professor Snaith.

Read the full story Posted: Jun 26,2018

Oxford PV and HZB develop a simplified perovskite tandem solar cell

Oxford Photovoltaics, in collaboration with Helmholtz-Zentrum Berlin (HZB) and the Photovoltaics and Optoelectronics Device Group at the University of Oxford, produced a 1 cm2 perovskite-silicon two-terminal tandem solar cell with a verified conversion efficiency of 25.2%. The two-terminal tandem solar cell efficiency was certified by the Fraunhofer Institute for Solar Energy Systems ISE.

Oxford PV and HZB develop a simplified perovskite tandem solar cell image

Dr Chris Case, Chief Technology Officer at Oxford PV commented, 'The unique, optically enhanced architecture developed as part of this collaboration, minimizes losses, and has helped us achieve this record setting efficiency'.

Read the full story Posted: Jun 18,2018

Oxford PV secures £8.02 Million in funding

Oxford PV has announced it has secured a further £8.02 Million (around $11.2 USD) in funding from its existing investors including Statoil and Legal & General Capital, to continue the commercialization of perovskite-on-silicon tandem solar cell technology.

The funding will enable Oxford PV to continue to transfer its advanced perovskite-on-silicon tandem solar cell technology from the company's lab in Oxford, UK to industrial scale processes and equipment at the company's demonstration line in Brandenburg an der Havel, Germany. Oxford PV is working to fully optimize its commercial sized perovskite-on-silicon tandem solar cell technology, to ensure ease of integration into large scale silicon solar cell and module production. The company is closely collaborating with its development partner ' a major manufacturer of silicon solar cells and modules.

Read the full story Posted: Apr 25,2018