Studies on ‘fritted’ thick films of photoconducting CdS

Heterocontact type CuO-modified SnO2 sensor for the detection of a ppm level H2S gas at room temperature

“…The thixotropic paste was screen printed on a glass substrate in desired patterns [39][40]. The films prepared were fired at 550 • C for 24 h. These films were surface modified by dipping them into a 0.01 M aqueous solution of cupric chloride for different intervals of time and were dried at 80 • C followed by firing at 550 • C for 24 h in air ambient.…”

Surface customization of SnO2 thick films using RuO2 as a surfactant for the LPG response

“…This mixture was ball milled for 2 h to get homogeneous powder and was then sintered at 1000 • C for 3 h in a muffle furnace. Thick films of pure and RuO 2 -doped SnO 2 were prepared by screen printing technique [29,30] onto alumina substrates in the desired pattern. The surface-ruthenated (surface customized using RuO 2 ) SnO 2 films were obtained by dipping pure SnO 2 thick films into an aqueous solution (0.01 M) of ruthenium chloride for different intervals of time such as 5, 15, 30, 45 and 60 min.…”

Study of the photo-adjustability of pn-junctions in photovoltaic mode coupled to photoconductors

“…However, in most of the aforementioned applications this is not an issue as there is no demand for analog accuracy, and often binary information suffices, as to indicate values above or below a certain threshold value. [5,6] Commercial photoconductor devices are often sold as dielectric ceramic coins covered by a photoconductor material, whose exposed area has a thin serpentine-like shape. For an eventual coupling of photoconductor to cells in a photovoltaic panel, the photoconductor material could be integrated as stripes deposited in the voids between cells, or even on the contact metal grids of the cell, as a post-processing step, being therefore exposed to a more closely matching illumination condition to that of the cells, as regards irradiance level and angle.…”