【摘要】 采用低成本的无机盐为前驱体,通过溶胶凝胶法制备了高质量的黄铜矿结构CuInSe2太阳能电池光吸收层薄膜.先将制备得到的溶胶通过旋涂甩胶的方法成膜,再先后置于氢气中还原和在硒蒸气中进行硒化处理,即可得到所需薄膜.通过XRD,XRF,SEM和Raman散射等对材料的结构和形貌进行表征.结果表明:采用这种简单的方法所制备的薄膜除了具备平整度好、结晶度高和致密性好等优点外,Raman散射还表明薄膜表面不存在Cu2-xSe等杂相,上述优点非常有利于后续高质量的薄膜太阳能电池的制作.最后,讨论了CuInSe2薄膜中分层现象的产生以及形成机理。更多还原

【Abstract】 High quality chalcopyrite CuInSe2 films were synthesized by a non-vacuum solution method using nitrates as sources for low-cost photovoltaic applications.The solution based on nitrates was used for precursor films by the spin-coating process,and sequential reduction and selenization treatments were performed with hydrogen and Se vapor,respectively.Through X-ray diffraction(XRD),X-ray fluorescence(XRF),scanning electron microscope(SEM) and Raman scatting measurements,it was found that uniform,high crystalline and crack-free films were obtained using this simple method.Also,the films exhibited Cu2-xSe secondary phase free property,indicating the excellent quality of the synthesized CuInSe2 thin films.Finally,the phenomenon and mechanism of the two-layered structure formation of the synthesized CuInSe2 thin film were discussed.更多还原