Scientists in the United States discovered that hydrogen plays a leading role in the formation of defects in a perovskite film, which limit their performance as PV devices. The discovery, according to the researchers, offers further insight into observations already established by trial and error and could help to push the impressive efficiency achievements already made by perovskites even higher.
The Chinese manufacturer has claimed a world record for a large-size, contact-passivated solar cell. The result, certified by Germany’s Institute for Solar Energy Research in Hamelin, betters the company’s previous record by almost 0.6%.
From the acquisition of IP to commercialization, the PV industry has witnessed a rapid rise of gallium-doped silicon. Researchers are testing the resulting cells’ stability while industry has begun the manufacturing phase. All this leads to a key question: Will gallium doped silicon solar modules will be the next big thing?
The Fraunhofer Institute for Solar Energy Systems’ (ISE) CalLab has confirmed the new efficiency rating. The researchers have combined semiconductors, perovskites and CIGS to produce a monolithic two-terminal tandem cell.
The Chinese-Canadian manufacturer said the new results improve upon its previous record by around 1%. The achievement has been certified by Germany’s Institut für Solarenergieforschung GmbH (ISFH).
Italian researchers have added graphene to the titanium dioxide electron selective layer used in a perovskite cell to increase chemical stability. The two-terminal cell was made by stacking two sub-cells which were fabricated and optimized separately.
The record feat compares to usual figures of 2-3% for such devices. The Taiwanese scientists who developed the cell said it was prepared with the Silar method and is based on a ternary metal sulfide-alloyed semiconductor. They claim performance could be further boosted.
The Chinese manufacturer said the result was confirmed by Germany’s TÜV Rheinland. The achievement beats the company’s previous record of 21.65%, set last month.
The Chinese manufacturer has achieved conversion efficiencies of 21.82% and 22.49% for its p-type PERC and n-type HOT bifacial panels, respectively. The results were confirmed by Germany’s TÜV Rheinland.
The result was verified by Germany’s Institute für Solarenergieforschung GmbH. The Canadian-Chinese manufacturer claims to have achieved 22.8% efficiency for its multi-crystalline P5 cell, produced with a mono cast manufacturing process.
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