Hydrogen gas sensing properties of WO₃ sputter-deposited thin films enhanced by on-top deposited CuO nanoclusters

The advent of the hydrogen economy is accompanied by increased demand for sensing devices. In our recent paper, we introduce an improvement of WO₃-based hydrogen sensors via deposition of CuO nanoclusters that lead to the formation of nano p–n junctions on the surface. The preparation techniques used in the study are scalable and compatible with standard industrial processes. Furthermore, the improvement was achieved without the use of noble metals. The paper is free to access for the next 50 days through this link.