Comparison between thin film and bonded powder phosphors for thermographic sensing in gas turbine engines

Photoluminescence Properties of Nanocrystalline Diamond Grown By MPECVD in CH4/H2/N2 Ambient

“…In contrast, our work included a 10nm grain sized film morphology that had the most evident and highest intensity PL peak in a data set that included a 200nm grain size thin film. Furthermore, our diamond thin-film transmission data is comparable to that of type Ib diamond powder by Chang et al (4), confirming that nanodiamond thin film transmission performance can potentially be tuned to match the performance of powder phosphor, but would offer in addition more durability than powder phosphor, as noted by McClean et al in a research comparing thin film and bonded powder phosphor for thermographic sensing in gas turbine engines (5).…”

An analysis of Y2O3:Eu3+ thin films for thermographic phosphor applications

“…To design a more fuel-efficient engine for aircraft or energy generation, determining the temperature of the internal components during operation is a critical measurement in evaluating the efficiency of the engine. Conventional techniques such as pyrometry, thermocouples, or thermistors, can only provide a limited amount of reliability, reproducibility and accuracy for measuring temperature under these conditions [1][2][3][4][5]. The problem that all these conventional techniques have in common is that they can only measure the temperature in one spot.…”

Luminescence Characteristics of Red Light Emitting (YVO4:Eu Thin-Film Phosphors Deposited on Si Substrate Using Pulsed Laser Deposition

“…3 YVO 4 has been widely used as a host lattice for lanthanide ions to produce phosphors emitting a variety of colors. 4 Eu 3+ -activated YVO 4 is an important commercial red phosphor used in the cathode ray tube displays, the high pressure mercury lamp, thermographic sensing, 5 and thermoluminescence, 6 4 3− group. 8 YVO 4 :Eu phosphor is recently attracting the attention for application to field emission display(FED) devices due to its sulfur-free composition and fabrication of thin film in relatively low temperature.…”