Synthesis of La_xAl_2-xO₃ Films Using Ultrasonic Spray Pyrolysis Technique

Abstract

The synthesis of La x Al 2-x O 3 films using ultrasonic spray pyrolysis technique are reported. The films were deposited from a spraying solution of aluminum acetylacetonate (Al(acac) 3 ) and lanthanum(III) nitrate hexahydrate La(NO 3 ) 3 6H 2 O dissolved in N,N-Dimethylformamide on (100) Si substrates. The substrate temperature during was in the range 500-600°C. The mean roughness was lower than 18 Å in all cases. The films were amorphous in all cases. The optical band gap was 5.42 eV and the refractive index was in the 1.64-1.72 range depending of the deposition conditions.

Spectral investigations on Eu3+,Sm3+‐doped and Sm3+/Eu3+ co‐doped potassium‐fluoro‐phosphate glass emitting intense orange‐red for lighting applications

“…The development of novel optical devices for use in lasers, sensors, displays and optical amplifiers and fibers is a main interest. [1] Glass with rare earth ions is one of many functional optical materials. Glass is particularly suitable for rare earth ions due to its higher solubility in the host glass matrix.…”