Shahiduzzaman Md, Sakuma Toshiharu, Kaneko Tetsuya, Tomita Koji, Isomura Masao, Taima Tetsuya, Umezu Shinjiro, Iwamori Satoru
Nanomaterials Research Institute (NanoMaRi), Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan.
Research Institute of Science and Technology (RIST), Tokai University, Kitakaname, Hiratsuka, 259-1292, Japan.
Sci Rep. 2019 Dec 20;9(1):19494. doi: 10.1038/s41598-019-56164-w.
In this study, a new, simple, and novel oblique electrostatic inkjet (OEI) technique is developed to deposit a titanium oxide (TiO) compact layer (CL) on fluorine-doped tin oxide (FTO) substrate without the need for a vacuum environment for the first time. The TiO is used as electron transport layers (ETL) in planar perovskite solar cells (PSCs). This bottom-up OEI technique enables the control of the surface morphology and thickness of the TiO CL by simply manipulating the coating time. The OEI-fabricated TiO is characterized tested and the results are compared with that of TiO CLs produced by spin-coating and spray pyrolysis. The OEI-deposited TiO CL exhibits satisfactory surface coverage and smooth morphology, conducive for the ETLs in PSCs. The power-conversion efficiencies of PSCs with OEI-deposited TiO CL as the ETL were as high as 13.19%. Therefore, the present study provides an important advance in the effort to develop simple, low-cost, and easily scaled-up techniques. OEI may be a new candidate for depositing TiO CL ETLs for highly efficient planar PSCs, thus potentially contributing to future mass production.
在本研究中，首次开发了一种新型、简单且新颖的倾斜静电喷墨（OEI）技术，用于在氟掺杂氧化锡（FTO）衬底上沉积氧化钛（TiO）致密层（CL），而无需真空环境。TiO用作平面钙钛矿太阳能电池（PSC）中的电子传输层（ETL）。这种自下而上的OEI技术通过简单地控制涂布时间就能控制TiO CL的表面形态和厚度。对通过OEI制备的TiO进行了表征测试，并将结果与旋涂和喷雾热解制备的TiO CL进行了比较。OEI沉积的TiO CL表现出令人满意的表面覆盖率和平滑形态，有利于PSC中的ETL。以OEI沉积的TiO CL作为ETL的PSC的功率转换效率高达13.19%。因此，本研究在开发简单、低成本且易于扩大规模的技术方面取得了重要进展。OEI可能是用于沉积高效平面PSC的TiO CL ETL的新候选方法，从而可能有助于未来的大规模生产。
