In doped ZnS Thin FilmsFrom 2014 to 2018 the number of “thin films” scientific publications have raised by almost 75%. More than 140.200 publications related to thin films from the main scientific journals (Nature, Elsevier, Springer, Taylor & Francis, and Wiley) have been examined to deem its main study topics. *

New material characterization and manufacturing” is the principal research topic representing 44% of the scientific literature analyzed related to thin films. This topic includes changes in thin film properties relative to electronics, optics, magnetism, and mechanics.

The next research topic with high presence is “solar cells characterization“, representing 17% of all literature analyzed. For those characterizations, they analyse layers or multilayers of different films deposited by PVD sputtering techniques, like perovskite/CIGS (multilayer film made of copper, indium, gallium, and selenide), layers doped with plasmons or kesterite/CZTSSe (multilayer film made of copper, zinc, tin and selenide/sulfur-selenium,).

The third research topic is the use of “electronic and conductivity properties” to achieve faster and reliable electric devices, with the 16% of the articles. It’s important to remark the fact that almost 20% of those studies are about superconductive layers.
Using the same methodology with Spanish and Portuguese publications, 600 thin film articles have been counted and analyzed from the same journals and CSIC publications to compare the principal topics and research lines with the global average, within the same period. The principal ranking topics remain the same, but there are some differences in the subtopic of “solar cell characterization“.

The main differences appear in solar cells characterization. The principal layers used in this case are kesterite layers and in a smaller proportion, perovskite layers. Those layers are in primary research phases but, it seems that in Spain and Portugal it’s taking more and more strength.

* image credit: © Belen Sotillo, Corazón laminado, In doped ZnS, nanostructures, obtained by physical vapor deposition of ZnS / In2S3 powders. Photo courtesy of SOCIEMAT


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