// ZSW Sets New World Record for Thin-film Solar Cells
ZSW researcher with world-record solar cell. (Photo: ZSW)
CIGS PV's efficiency ratings rising fast
The Centre for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW) has nudged up the performance bar for thin-film solar cells yet another notch. The Stuttgart-based scientists achieved 22.6 percent efficiency with their latest advance, topping the performance of a Japanese-made cell by 0.3 percentage points and bringing the world record back home to ZSW for the fifth time. And the pace of advances is picking up as recent strides in cell performance go to show: The efficiency of thin-film solar cells based on copper indium gallium diselenide (CIGS) has increased more in the last 3 years than in the previous 15. As efficiency goes up, the cost of solar power comes down.
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