Structural and optoelectronic characterization of RF sputtered ZnSnN(2).

Lahourcade, Lise; Coronel, Naomi C; Delaney, Kris T; Shukla, Sujeet K; Spaldin, Nicola A; Atwater, Harry A · Adv Mater · 2013

basic_science · Level V

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Abstract

ZnSnN(2), a new earth-abundant semiconductor, is synthesized and characterized for use as a photovoltaic absorber material. Results confirm the predicted orthorhombic Pna2(1) crystal structure in RF sputtered thin films. Additionally, optical measurements reveal a direct bandgap of about 2 eV, which is larger than our calculated bandgap of 1.42 eV due to the Burstein-Moss effect.