We investigated THz emission from Ar-ion-implanted Cu(In,Ga)Se2 (CIGS) films. radiation the CIGS films increases as density of implanted Ar ions increases. This is because contribute to an increase in surface surge current density. The effect Ar-ion implantation on carrier dynamics was also using optical pump probe spectroscopy. fitted results imply that charge transition intra-and carrier–carr...

This paper reports on the regeneration of minority carrier lifetime in passivated emitter and rear cell (PERC) structured silicon solar cells. It is observed that cells can degrade, recover then stabilize with illumination level ~1 sun (1000 W/m2) at 80oC. The exposure to 80oC enables release H from B-H bonds ~1.3 eV energy supplement interstitial Si passivate B-O defects responsible for instab...

Femtosecond laser-textured black silicon (fs-bSi) is known to suffer from heavy minority carrier recombination resulted laser irradiation. In this letter, we demonstrate that the thermal annealing step, generally used recover crystal damage, could improve lifetime of fs-bSi wafers only <te...