by Riko Seibo
Tokyo, Japan (SPX) Nov 15, 2025
Researchers in China have enhanced the efficiency and sturdiness of inverted perovskite photo voltaic cells by creating two new 56pi-electron fullerene derivatives generally known as C60-TFB and C60-TFP to be used as electron transport layers.
The analysis staff synthesized C60-TFB and C60-TFP by a 1,4-unsymmetrical addition method, giving the molecules cumbersome tert-butyl, indole, and azaindole teams. These teams stop dimerization when uncovered to mild and provide sturdy binding with the perovskite layer, leading to diminished defects. The ensuing electron transport layer varieties an efficient barrier to cease the migration of iodide ions from the perovskite layer and silver atoms from the electrode.
Gadgets examined with the brand new C60-TFP electron transport layer reached an influence conversion effectivity of 25.93 %, greater than the 24.08 % achieved with standard PCBM-based units. Throughout a 1000-hour interval of steady illumination at 55 levels Celsius, the brand new units retained 81.9 % of their preliminary effectivity. Compared, units utilizing PCBM held solely 62.9 %. The outcomes affirm the advantages of the brand new fullerene derivatives for growing stability in perovskite photo voltaic cells.
Professor Shangfeng Yang commented, “Coinciding with the fortieth anniversary of the invention of fullerene, he’s assured that extra novel fullerene-based electron transport supplies will emerge for high-performance perovskite photo voltaic cells sooner or later.”
Associated Hyperlinks
Science China Press
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