Researchers report electrically assisted amplified spontaneous emission in perovskite LEDs

Researchers at Imec have reported a metal halide perovskite LED (PeLED) stack that emits 1,000x more light “than state-of-the-art OLEDs”. The team developed a transparent PeLED architecture, that combines low optical losses with excellent current-injection properties. 

In this work, the team showed that perovskite semiconductor optical amplifiers and injection lasers are within reach using this type of transparent PeLED.

Read the full story Posted: Jan 04,2024

Researchers develop perovskite solar panels with a thermally stable device stack

A research team led by Imec, that also included teams from Hasselt University and Kuwait University, has fabricated a perovskite solar module based on a scalable, stable device stack that can be processed with industry-compatible techniques, such as sputtering, evaporation, and slot-die coating.

The panel is based on 17%-efficient perovskite solar cells built with a p-i-n configuration, an electron transport layer made of nickel(II) oxide (NiOx), a perovskite layer deposited via slot-die coating, an electron transport layer made of buckminsterfullerene (C60) and lithium fluoride (LiF), a bathocuproine (BCP) buffer layer, and a copper (Cu) electrode.

Read the full story Posted: Apr 06,2023

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

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

imec to assist 4DS Memory in developing a process for its perovskite-based RRAM memory

Australia-based RRAM developer 4DS Memory announced that it has signed an agreement with Belgium-based imec to develop a transferable manufacturing process for its technology. As part of the agreement the two parties will demonstrate the process with a 1Mbit test chip.

The 4DS memory cell is constructed using an advanced perovskite material, which has the same crystal structure as the inorganic compound calcium titanium oxide. The cells have no filaments and are so claim to be easier to scale compared to filamentary RRAM.

Read the full story Posted: Nov 02,2017

Imec's perovskite/silicon solar module reaches 23.9% efficiency

Belgian research centre Imec has announced that it has boosted the performance of its its 4 cm2 perovskite/silicon tandem photovoltaic module to a power conversion efficiency of 23.9%. According to Imec, this is the first time that a module-on-cell stack structure has outperformed a standalone silicon solar cell.

Imec reaches record efficiency of perovskite-based module image

'Two innovations are key to this achievement,' said group leader for thin-film photovoltaics at imec and perovskite PV program manager at Solliance. 'First, a different perovskite material (CsFAPbIBr) was used, largely improving the stability and conversion efficiency of the 4 cm 2 semi-transparent perovskite module to 15.3%. Second, the architecture of the stack was optimized for minimal optical losses by adding an anti-reflection texture on top of the module and a refractive index matching liquid between the perovskite module and the Si solar cell.'

Read the full story Posted: Aug 11,2017

Imec and Solliance create perovskite PV modules with 12.4% efficiency

Imec, a leading research and innovation hub in nano electronics, energy and digital technologies, and partner in Solliance, announced that it has improved its 4x4cm2 perovskite module achieving a certified conversion efficiency of 12.4%.

Imec and Solliance achieve 12.4% efficiency image

The module efficiency was measured under long-term maximum power point (MPP) tracking, testifying to its exceptional stability. At Solliance, this perovskite technology is developed with industrially-applicable processes and with a view towards a rapid market introduction of this promising source of renewable energy.

Read the full story Posted: Apr 11,2017

Perovskite/CIGS stacked solar modules reach 17.8% efficiency

Researchers from Karlsruhe Institute of Technology (KIT), ZSW and IMEC presented at the PSCO international conference a prototype of the new solar module using thin-film technology. According to the researchers, an efficiency of 17.8% has been achieved in this prototype of a perovskite/CIGS tandem thin-film solar module, exceeding the efficiency of individual perovskite and CIGS solar modules for the very first time.

To create the new solar module, the researchers used a stack module. By merging both perovskite and CIGS into one module, the new structure could benefit from the advantages of both technologies. The upper semitransparent layer of the model is made of perovskite, which absorbs high solar energy. Meanwhile, the lower CIGS layer is responsible for infrared conversion. Having an area of 3.67 square meters, the stacked perovskite/CIGS model is also designed to meet industrial needs. It features a monolithic interconnection scheme using 4 and 7 module cell stripes. Unlike other small-scale solar cells, the new stacked solar module can be interconnected for several square meters through laser processing.

Read the full story Posted: Oct 05,2016

Semi-transparent perovskite PV modules created by imec

Nanoelectronics research center imec has presented what is thought to be the first-ever semi-transparent perovskite PV-module, achieving power conversion efficiencies up to 12%. This technology may enable semi-transparent PV-windows and other such advanced applications. Moreover, combining these semitransparent perovskite modules with Si solar cells, an unprecedented 20.2% in power conversion efficiency for a perovskite/Si stacked solar module was achieved.

The semi-transparent perovskite modules of imec realized by scalable coating techniques showed efficiencies of 12% on sizes as large as 4 cm2 and 10 % on sizes as large as 16cm2, a world-best achievement in this domain.

Read the full story Posted: Jun 01,2016