A team led by Pakistani scientist has developed a promising solar cell technology that sets two new world records of efficiency in the lab. The approach could help foster clean energy initiatives to combat the global warming issue.
Yasir Siddique – a PhD scholar at the Korea Institute of Energy Research (KIER) and the University of Science and Technology (UST), Daejeon, South Korea – has designed and fabricated solution-processed Copper Indium Sulphu Selenide (CISSe) solar cells.
The stable solution-processed, low bandgap CISSe device perfectly works as a single cell, but could also be sandwiched with other thin-film solar cell materials having suitable bandgap as top cell-like recently emerging solar cell technology of Perovskite in tandem solar cell configuration.
The bandgap is the amount of energy needed to free the electron from any semiconductor; the lower the bandgap the more it produces electricity.