Sarma Abhisakh, Dippel Ann-Christin, Gutowski Olof, Etter Martin, Lippmann Milena, Seeck Oliver, Manna Gouranga, Sanyal Milan K, Keller Thomas F, Kulkarni Satishkumar, Guha Puspendu, Satyam Parlapali V, Zimmermann Martin V
Deutsches Elektronen-Synchrotron DESY Notkestraβe. 85 22603 Hamburg Germany
Surface Physics and Materials Science Division, Saha Institute of Nuclear Physics 1/AF, BidhanNagar Calcutta 700 064 India.
RSC Adv. 2019 Oct 7;9(55):31900-31910. doi: 10.1039/c9ra04293h.
Copper thiourea complexes are an important material class for application as a precursor of copper sulfide nanocrystals with potential use in solar cells, optoelectronics, medicine, They represent a type of single source precursor, comprising both copper and sulfur in one chemical compound, whose tunable stoichiometry and morphology enable control of the quality and properties of the synthesized copper sulfide nanocrystals. Here, we present a template free electrochemical route to prepare nanowires of copper thiourea (tu) chloride hemihydrate ([Cu(tu)]Cl·½HO) by pulse deposition. We proposed the model of the growth of nanowires. We also demonstrate complete transformation from the precursor to copper sulfide nanowire by heating it to 180 °C that involves 20% volume loss due to the decomposition of organic constituents; the obtained nanowires have around 38% covellite (CuS) and 62% digenite (CuS) phases. Electrochemistry offers the advantage of spatially selected deposition in the active regions of a device.
硫脲铜配合物是一类重要的材料，可作为硫化铜纳米晶体的前驱体，在太阳能电池、光电子学、医学等领域具有潜在应用。它们代表了一种单源前驱体，在一种化合物中同时包含铜和硫，其可调的化学计量比和形态能够控制合成的硫化铜纳米晶体的质量和性能。在此，我们展示了一种无模板的电化学方法，通过脉冲沉积制备硫脲氯化铜半水合物（[Cu(tu)]Cl·½H₂O）纳米线。我们提出了纳米线的生长模型。我们还通过将前驱体加热到180°C证明了其向前驱体硫化铜纳米线的完全转变，由于有机成分的分解，这一过程涉及20%的体积损失；所获得的纳米线含有约38%的辉铜矿（CuS）相和62%的蓝辉铜矿（Cu₂S）相。电化学提供了在器件有源区域进行空间选择性沉积的优势。
