Current commercially available solar panels convert about 20-22% of sunlight into electrical power. Beyond Silicon, Caelux, First Solar, Hanwha Q Cells, Oxford PV, Swift Solar, Tandem PV 3 to 5 years In November 2023, a buzzy solar technology broke yet another world. . The second and most significant is the relentless increase in the panels' power conversion efficiency – a measure of how much sunlight can be transformed into electricity. This might make you wonder: just how efficient can we. . Researchers have made a key advance in thin-film solar cell technology by rethinking one of its most problematic regions: the interface between the light-absorbing material and the metal contact. Credit: Shutterstock The introduction of a nanometric germanium oxide layer drastically improved device. . Lab record: 26. Better low-light performance and reduced degradation over time. The company said an industrial-scale tandem solar cell using a. .