Gonçalves Bruna F, Botelho Gabriela, Lanceros-Méndez Senentxu, Kolen'ko Yury V
International Iberian Nanotechnology Laboratory, Braga 4715-330, Portugal; Center of Physics, University of Minho, Braga 4710-057, Portugal; Center of Chemistry, University of Minho, Braga 4710-057, Portugal.
Center of Chemistry, University of Minho, Braga 4710-057, Portugal.
J Colloid Interface Sci. 2021 Sep 15;598:388-397. doi: 10.1016/j.jcis.2021.04.059. Epub 2021 Apr 16.
Given the societal concerns about the use of toxic chemicals and costly fabrication of functional materials and devices for photovoltaic applications, it is important to develop alternative sustainable methodologies. Previous studies have shown that cost-effective printing fabrication of Cu(In,Ga)Se thin film photovoltaics represents an interesting alternative to energy-demanding vacuum-based deposition methods, commonly used to produce Cu(In,Ga)Se photovoltaics. To enrich the field of printed Cu(In,Ga)Se photoabsorber thin films and to develop associated eco-friendly solutions, two novel inks, consisting of non-toxic reagents and readily available oxide materials, are reported. Screen printing of the inks over fluorine-doped tin oxide conductive substrates followed by swift selenization of the resultant patterns provides a straightforward route to phase-pure, uniform, and compact Cu(In,Ga)Se films with thickness and band gap energies ranging from 2.5 µm to 3.5 µm and from 0.97 eV to 1.08 eV, respectively. The present approach represents an important step forward in the sustainable fabrication of Cu(In,Ga)Se photovoltaics, where the physical properties of the photoabsorber can be easily adjusted by tuning the conditions of the screen printing process and the metal ratios in the inks.
鉴于社会对有毒化学品的使用以及用于光伏应用的功能材料和器件的昂贵制造的担忧，开发替代的可持续方法非常重要。先前的研究表明，具有成本效益的铜铟镓硒（Cu(In,Ga)Se）薄膜光伏器件的印刷制造是一种有趣的替代方法，可替代常用于生产铜铟镓硒光伏器件的高能耗真空沉积方法。为了丰富印刷铜铟镓硒光吸收体薄膜领域并开发相关的环保解决方案，本文报道了两种由无毒试剂和易得的氧化物材料组成的新型油墨。在氟掺杂氧化锡导电基板上对油墨进行丝网印刷，然后对所得图案进行快速硒化，提供了一种直接的途径来制备相纯、均匀且致密的铜铟镓硒薄膜，其厚度范围为2.5微米至3.5微米，带隙能量范围为0.97电子伏特至1.08电子伏特。本方法代表了铜铟镓硒光伏器件可持续制造方面向前迈出的重要一步，其中通过调整丝网印刷工艺条件和油墨中的金属比例，可以轻松调节光吸收体的物理性能。
