The Chinese manufacturer said its new Hi-MO X6 Scientist series has a temperature coefficient of -0.28%/C and a power output ranging from 620 W to 630 W. They rely on the company’s proprietary hybrid passivated back contact (HPBC) cell technology.

An Indian-US research team has fabricated a four-terminal perovskite-cadmium telluride tandem solar cell by utilizing a highly conductive and sputtered transparent electrode to increase the current density of the bottom cell. The tandem device combines a 18.3%-efficient top perovskite cell and a 19.53%-efficient cadmium telluride bottom device.

The German research institute said the new 120 µm thin solar cell could exceed 25% efficiency with the next optimization steps. The device was metalized via screen-printed contact fingers and calibrated by scientists at the Institute for Solar Energy Research Hamelin.

U.S. scientists have developed a thermophotovoltaic cell that could be paired with inexpensive thermal storage to provide power on demand. The indium gallium arsenide (InGaAs) thermophotovoltaic cell absorbs most of the in-band radiation to generate electricity, while serving as a nearly perfect mirror.

Researchers in Nigeria have proposed to build inverted perovskite solar cells exclusively with all-inorganic transport materials and a lead-free perovksite absorber. Through a series of simulations, they showed these device may achieve efficiencies over 30% with low production costs.

Conceived by a Dutch research group, the proposed system is intended to store surplus renewable electricity via hydrogen generation and battery storage, with the latter being used only when hydrogen generation is not immediately available. Despite its high initial costs, the system can reportedly offer stable operation.

The tandem solar cell is based on a perovskite top cell treated with an additive known as 2,3,4,5,6-pentafluorobenzylphosphonic acid (pFBPA), which reportedly improves its power conversion efficiency and fill factor. The tandem device also integrates a bottom heterojunction silicon cell made with a 190-μm-thick, 2 Ω.cm, n-type, float-zone, shiny-etched monocrystalline wafer.

Researchers have developed a thermal regulation strategy to improve the performance of inverted tin-lead perovskite tech for all-perovskite tandem solar cells. It has an efficiency of 23.4% and contributed to a 27.2% efficiency in a tandem cell while ensuring stability.

The researchers say the cell has a top perovskite cell with a transparent back contact made of indium zinc oxide and a commercially established cadmium telluride bottom device. They claim the champion tandem cell has the potential to reach a 30% efficiency.

Developed through bandgap engineering and material design, the proposed PV device relies on a tin-based perovskite material known as CsSnI3-xBrx. It can reportedly be further designed to achieve power conversion efficiencies exceeding 24%.