Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5489618 | Journal of Crystal Growth | 2017 | 6 Pages |
Abstract
Dy-doped lead potassium niobate (Pb2KNb5O15, PKN) single crystal was grown by the modified vertical Bridgman method through spontaneous nucleation. The crystal was brownish, transparent and inclusion free. Five excitation peaks of Dy3+ ions were clearly seen from near ultraviolet region to blue range. It was unique that the excitation peaks in blue range were more intense, especially the one centered at 455Â nm. The emission bands consisted of blue, yellow and red emissions, which were at about 487Â nm, 573Â nm and 662Â nm respectively. The CIE chromaticity diagram of PKN:Dy indicated that white light and yellow light could be emitted when the crystal was excited under near ultraviolet light and blue light, respectively. Thus PKN:Dy crystal is a candidate material whose emitting light could be tunable through changing the excited light wavelength.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Wenbin Liu, Tian Tian, Bobo Yang, Jiayue Xu, Hongde Liu,