Effect of thermal pretreatment of metal precursor on the properties of Cu<sub>2</sub>ZnSnS<sub>4</sub> films<xref ref-type="fn" rid="cpb141997fn1">*</xref>

Effect of thermal pretreatment of metal precursor on the properties of Cu₂ZnSnS₄ films*

Wang Wei^a), Shen Hong-Lie^a),^b)†, Jin Jia-Le^a), Li Jin-Ze^a), Ma Yue^c)

(a) Absorption coefficients and (b) ( α h ν )² versus photon energy of CZTS films pretreated at different temperatures.