L R AS Published on Monday 31 May 2021 - n° 364 - Categories:R&D
R&D highlights: flexible perovskite cell, perovskite sandwich film, holographic light, methylammonium-free perovskite cell, CdTe heterojunction, fluorenone battery
R&D highlights: flexible perovskite cell, perovskite sandwich film, holographic light, methylammonium-free perovskite cell, CdTe heterojunction, fluorenone battery
CEA-Ines achieves an efficiency of 19.2% with a 0.33 cm² flexible perovskite solar cell. The cell was fabricated with a flexible substrate made of indium tin oxide (ITO) and polyethylene terephthalate (PET).
*
Scientists from Australia's CSIRO and Shandong University came up with the idea of creating a perovskite film in the centre of a sandwich
*
The University of Arizona (USA) has developed a holographic light collector to separate the colours of sunlight (see photo) and direct them to the most receptive solar cells in the panel. This process could increase the panel's efficiency by 4.5%.
https://www.pv-magazine.com/2021/05/26/holographic-light-collector-to-improve-solar-panel-yield/
*
Researchers in Singapore and Grenoble have developed a methylammonium-free perovskite solar cell with a slot-die coating, an n-i-p arrangement, a fluorine-doped tin oxide substrate, a tin oxide layer, a perovskite film and a hole-blocking layer. It has an efficiency of 18.03%, an open circuit voltage of 1024 mV and a short circuit current density of 22.4 mA/cm².
*
An international group of researchers have studied heterojunction CdTe solar cells based on antimony selenide backfield layers. They claim that the addition of this compound can increase the efficiency of CdTe cells by about 9% and has the technical potential to achieve efficiencies of over 40%.
*
Americans have developed a fluorenone-based redox flow battery. Its energy density is twice that of vanadium; the product is very inexpensive. In one test, the battery completed 1,111 full charge/discharge cycles, equivalent to several years of operation, and lost less than 3% of its energy capacity.
https://www.pv-magazine.com/2021/05/26/redox-flow-battery-based-on-fluorenone/
