Fabrication of Single Crystal Gallium Phosphide Thin Films on Glass.

Title	Fabrication of Single Crystal Gallium Phosphide Thin Films on Glass.
Authors	H. Emmer; C.T. Chen; R. Saive; D. Friedrich; Y. Horie; A. Arbabi; A. Faraon; H.A. Atwater
Journal	Sci Rep
DOI	10.1038/s41598-017-05012-w
Abstract	Due to its high refractive index and low absorption coefficient, gallium phosphide is an ideal material for photonic structures targeted at the visible wavelengths. However, these properties are only realized with high quality epitaxial growth, which limits substrate choice and thus possible photonic applications. In this work, we report the fabrication of single crystal gallium phosphide thin films on transparent glass substrates via transfer bonding. GaP thin films on Si (001) and (112) grown by MOCVD are bonded to glass, and then the growth substrate is removed with a XeF2 vapor etch. The resulting GaP films have surface roughnesses below 1?nm RMS and exhibit room temperature band edge photoluminescence. Magnesium doping yielded p-type films with a carrier density of 1.6?×?10(17)?cm(-3) that exhibited mobilities as high as 16 cm(2)V(-1)s(-1). Due to their unique optical properties, these films hold much promise for use in advanced optical devices.
Citation	H. Emmer; C.T. Chen; R. Saive; D. Friedrich; Y. Horie; A. Arbabi; A. Faraon; H.A. Atwater.Fabrication of Single Crystal Gallium Phosphide Thin Films on Glass.. Sci Rep. 2017;7(1):4643. doi:10.1038/s41598-017-05012-w

Related Elements

Phosphorus

15 P 30.973762000 Phosphorus

See more Phosphorus products. Phosphorus (atomic symbol: P, atomic number: 15) is a Block P, Group 15, Period 3 element. The number of electrons in each of Phosphorus's shells is 2, 8, 5 and its electronic configuration is [Ne] 3s² 3p³. The phosphorus atom has a radius of 110.5.pm and its Van der Waals radius is 180.pm. Phosphorus is a highly-reactive non-metallic element (sometimes considered a metalloid) with two primary allotropes, white phosphorus and red phosphorus its black flaky appearance is similar to graphitic carbon. Compound forms of phosphorus include phosphates and phosphides. Phosphorous was first recognized as an element by Hennig Brand in 1669 its name (phosphorus mirabilis, or "bearer of light") was inspired from the brilliant glow emitted by its distillation.

Gallium

31 Ga 69.723000000 Gallium

See more Gallium products. Gallium (atomic symbol: Ga, atomic number: 31) is a Block P, Group 13, Period 4 element with an atomic weight of 69.723.The number of electrons in each of Gallium's shells is 2, 8, 18, 3 and its electron configuration is [Ar] 3d¹⁰ 4s² 4p¹. The gallium atom has a radius of 122.1 pm and a Van der Waals radius of 187 pm. Gallium Bohr Model Gallium was predicted by Dmitri Mendeleev in 1871. It was first discovered and isolated by Lecoq de Boisbaudran in 1875. In its elemental form, gallium has a silvery appearance. Elemental Gallium Gallium is one of three elements that occur naturally as a liquid at room temperature, the other two being mercury and cesium. Gallium does not exist as a free element in nature and is sourced commercially from bauxite and sphalerite. Currently, gallium is used in semiconductor devices for microelectronics and optics. The element name originates from the Latin word 'Gallia' referring to Gaul, the old name of France.