摘要
锌黄锡矿结构的Cu_2ZnSn(S,Se)_4具有优异的光学性能,组成元素都是地壳的丰产元素,且安全无毒,特别适合未来制备高效、廉价的薄膜太阳能电池~([1])。我们开发了一种通用、绿色环保的方法制备一系列金属硫属化合物薄膜。金属氧化物、金属氢氧化物、金属盐等溶解在巯基乙酸和乙醇胺的混合溶液,形成了多种金属-有机分子前驱体溶液。通过旋涂相应的前驱体溶液,获得了高质量的SnS、CuInS_2、CuSbS_2、Cu(In,Ga)S_2、Cu_2ZnSnS_4薄膜及Ag(1%)掺杂的Zn_xCd_(1-x)S发光量子点薄膜。采用这种方法制备的Cu_2ZnSn(S,Se)_4太阳能电池的光电转换效率达到6.83%,而且制备的器件具有较高的稳定性和重现性~([2])。
We developed a versatile and environmentally-friendly solution approach for the fabrication of a variety of metal sulfide nanocrystal thin films. Metal oxides, metal hydroxides, metal chlorides, metal acetates, and metal acetylacetonates can be used as the starting materials and dissolved in thioglycolic acid and thanolamine, forming many types of metal-organic precursor solutions. High quality CdS, SnS, CuInS_2, CuSbS_2,Cu_2ZnSnS_4, Cu(In_(0.7)Ga_(0.3))S_2, and luminescent Ag-doped Zn_xCd_(1-x)S nano-crystal thin films have been successfully prepared by spin-coatingtheir corresponding metal precursor solutions. Cu_2ZnSn(S,Se)_4 thin film solar cell with a power conversion efficiency of 6.83% has been realized by this versatile method.
引文
[1]W.B.Yang,H.-S.Duan,S.-H.Li,W.W.Hou and Y.Yang,Adv.Mater.,2012,24,6323–6329.
[2]Q.Tian,G.Wang,W.Zhao,Y.Chen,Y.Yang,L.Huang,D.Pan,Chem.Mater.2014,26,3098.