Enhancement of photo-sensing properties of CdS thin films by changing spray solution volume

Simplified chemical processed Cd1−x Al x S thin films for high-performance photodetector applications

“…The identified diffraction peaks 100, 002, 101, 102, 110, 103, 112 and 004 are in well agreement with hexagonal structure of CdS. The observed peaks of CdS thin films were indexed in accordance with the previous report [17]. In figure 1, a high intense peak obtained at 2θ = 26.457 • for all films than other peaks indicate a preferential growth orientation along (002) direction.…”

“…In addition, a small impurity peak (CdO) was originated at 33.15 • for all films. Raj et al [17] observed the same impurity (CdO) peak for film prepared at 450 • C substrate temperature when growing the CdS films and suggested that 450 • C is beyond the optimum temperature. The origin of impurity peak matches with Ravikumar et al [20] for CdO film.…”

“…Different methods are used to prepare CdS films such as spray pyrolysis [4,14], sol gel [15], chemical bath deposition [13], and electron beam evaporation [16], etc. There are only a few reports available for the undoped and doped CdS thin films prepared by spray method for visible photodetector application [4,17]. Recently, Raj et al [17] reported on CdS films for visible photodetector fabricated by nebulizer spray method.…”

“…There are only a few reports available for the undoped and doped CdS thin films prepared by spray method for visible photodetector application [4,17]. Recently, Raj et al [17] reported on CdS films for visible photodetector fabricated by nebulizer spray method. They found the responsivity of 1.01 (AW −1 ) with an external quantum efficiency of 257%.…”

High-performance ammonia gas sensor based on spray pyrolysis developed In2O3:La films

“…A number of methods for producing thin films have been developed recently, including atomic layer deposition [17], hydrothermal synthesis [18,19], magnetron sputtering [20], sol-gel approach [21], electro spinning [22], and nebulizer spray pyrolysis (NSP) [23][24][25]. Among several synthesis methods, NSP technique is a simple and versatile deposition procedure that does not require vacuum condition and allows for the easy fabrication of films with diverse compositions, dense and porous films.…”