Determination of Bulk Minority-Carrier Lifetime in BaSi2 Earth-Abundant Absorber Films by Utilizing a Drastic Enhancement of Carrier Lifetime by Post-Growth Annealing

• Published in: Applied physics express Vol. 6; no. 11; pp. 112302 - 112302-4
• Main Authors: Hara, Kosuke O, Usami, Noritaka, Nakamura, Kotaro, Takabe, Ryouta, Baba, Masakazu, Toko, Kaoru, Suemasu, Takashi
• Format: Journal Article
• Language: English
• Published: The Japan Society of Applied Physics 01.11.2013

We have successfully determined the bulk minority-carrier lifetime in BaSi 2 epitaxial films by utilizing a drastic enhancement of lifetime by post-growth annealing at 800 °C, which is attributed to strain relaxation. From the film-thickness dependence of lifetime, we reveal that the bulk lifetime i...