摘要:
The present invention provides a monolithic piezoelectrically-tunable optoelectronic device structure which includes an epitaxial piezoelectric material that is monolithically integrated with an optical device, such as a laser structure or a photodetector structure for example. In alternate embodiments, the epitaxial piezoelectric material may be monolithically integrated either above or below the active layer of the optical device or may be positioned adjacent to the optical device. A vertical cavity surface emitting laser diode which monolithically integrates a piezoelectric thin-film exhibits high tunability and improved performance.
摘要:
Light emitting devices (262) and optically-active material (264) can be formed overlying monocrystalline substrates such as large silicon wafers (266) using a compliant substrate for growing the devices (262). One way to achieve the formation of a compliant substrate includes first growing an accommodating buffer layer on a silicon wafer (266). The accommodating buffer layer is a layer of monocrystalline oxide spaced apart from the silicon wafer by an amorphous interface layer of silicon oxide. The amorphous interface layer dissipates strain and permits the growth of a high quality monocrystalline oxide accommodating buffer layer.
摘要:
High quality epitaxial layers of monocrystalline piezoelectric materials and compound semiconductor materials can be grown overlying monocrystalline substrates (22) such as large silicon wafers by forming a compliant substrate for growing the monocrystalline layers. An accommodating buffer layer (24) comprises a layer of monocrystalline oxide spaced apart from a silicon wafer by an amorphous interface layer (28) of silicon oxide. An integrated circuit including at least one surface acoustic wave device can be formed in and over the high quality epitaxial layers.
摘要:
High-density metal-insulator transition field effect transistors are grown on an advanced substrate using buried channel or surface channel designs. With respect to the advanced substrate, high quality epitaxial layers of monocrystalline materials can be grown overlying monocrystalline substrates such as large silicon wafers by forming a compliant substrate for growing the monocrystalline layers. An accommodating buffer layer comprises a layer of monocrystalline oxide spaced apart from the silicon wafer by an amorphous interface layer of silicon oxide. The amorphous interface layer dissipates strain and permits the growth of a high quality monocrystalline oxide accommodating buffer layer. The accommodating buffer layer is lattice matched to both the underlying silicon wafer and the overlying monocrystalline material layer. Any lattice mismatch between the accommodating buffer layer and the underlying silicon substrate is taken care of by the amorphous interface layer. In addition, formation of a compliant substrate may include utilizing surfactant enhanced epitaxy, epitaxial growth of single crystal silicon onto single crystal oxide, and epitaxial growth of Zintl phase materials.
摘要:
Multijunction solar cell structures (100) including high quality epitaxial layers of monocrystalline semiconductor materials that are grown overlying monocrystalline substrates (102) such as large silicon wafers by forming a compliant substrate for growing the monocrystalline layers are disclosed. One way to achieve the formation of a compliant substrate includes first growing an accommodating buffer layer (104) on a silicon wafer. The accommodating buffer (104) layer is a layer of monocrystalline material spaced apart from the silicon wafer by an amorphous interface layer (112) of silicon oxide. The amorphous interface layer (112) dissipates strain and permits the growth of a high quality monocrystalline oxide accommodating buffer layer. Multiple and varied accommodating buffer layers can be used to achieve the monolithic integration of multiple non-lattice matched solar cell junctions.
摘要:
High quality epitaxial layers of monocrystalline piezoelectric materials (106) and acousto-optic materials (108) can be grown overlying monocrystalline substrates (102) such as large silicon wafers by forming a compliant substrate for growing the monocrystalline layers. One way to achieve the formation of a compliant substrate includes first growing an accommodating buffer layer (104) on a silicon wafer (102). The accommodating buffer layer (104) is a layer of monocrystalline oxide spaced apart from the silicon wafer by an amorphous interface layer of silicon oxide (110). The amorphous interface layer dissipates strain and permits the growth of a high quality monocrystalline oxide accommodating buffer layer. Acousto-Optic devices (1018) may be formed using the piezoelectric materials (106) and the acousto-optic materials (108) and integrated with devices formed within the substrate (102) or other devices (1016, 1018) formed using other epitaxially grown monocrystalline layers.
摘要:
High quality epitaxial layers of monocrystalline materials can be grown overlying large silicon wafers by first growing an accommodating buffer layer (104) on a silicon wafer (102). The accommodating buffer layer (104) is a layer of monocrystalline material spaced apart from the silicon wafer (102) by an amorphous interface layer (108) of silicon oxide. The amorphous interface layer dissipates strain and permits the growth of a high quality monocrystalline accommodating buffer layer. Any lattice mismatch between the accommodating buffer layer and the underlying silicon substrate is taken care of by the amorphous interface layer. Utilizing this technique permits the fabrication of thin film pyroelectric devices (150) on a monocrystalline silicon substrate.
摘要:
High quality epitaxial layers of monocrystalline materials can be grown overlying monocrystalline substrates (22) such as large silicon wafers by forming a compliant substrate for growing the monocrystalline layers. An accommodating buffer layer (24) comprises a layer of monocrystalline oxide spaced apart from the silicon wafer by an amorphous interface layer (28) of silicon oxide. The amorphous interface layer (28) dissipates strain and permits the growth of a high quality monocrystalline oxide accommodating buffer layer (24). The accommodating buffer layer (24) is substantially lattice matched to both the underlying silicon wafer (22) and the overlying monocrystalline material layer (26). Any lattice mismatch between the accommodating buffer layer (24) and the underlying silicon substrate (22) is taken care of by the amorphous interface layer (28). In addition, formation of a compliant substrate may include utilizing surfactant enhanced epitaxy, epitaxial growth of single crystal silicon onto single crystal oxide, and epitaxial growth of Zintl phase materials.
摘要:
High quality epitaxial layers of conductive monocrystalline materials can be grown overlying monocrystalline substrates (22) such as large silicon wafers by forming a compliant substrate for growing the monocrystalline layers. One way to achieve the formation of a compliant substrate includes first growing an accommodating buffer layer(24) on a silicon wafer (22). The accommodating buffer layer (24) is a layer of monocrystalline material spaced apart from the silicon wafer (22) by an amorphous interface layer (28) of silicon oxide. The amorphous interface layer (28) dissipates strain and permits the growth of a high quality monocrystalline accommodating buffer layer (24).
摘要:
High quality epitaxial layers of monocrystalline materials can be grown overlying monocrystalline substrates such as large silicon wafers by forming a compliant substrate for growing the monocrystalline layers. An accommodating buffer layer comprises a layer of monocrystalline oxide spaced apart from a silicon wafer by an amorphous interface layer of silicon oxide. The amorphous interface layer dissipates strain and permits the growth of a high quality monocrystalline oxide accommodating buffer layer. The accommodating buffer layer is lattice matched to both the underlying silicon wafer and the overlying monocrystalline material layer. Any lattice mismatch between the accommodating buffer layer and the underlying silicon substrate is taken care of by the amorphous interface layer. In addition, formation of a compliant substrate may include utilizing surfactant enhanced epitaxy, epitaxial growth of single crystal silicon onto single crystal oxide, and epitaxial growth of Zintl phase materials. Photonic crystal structures may be integrally provided with such semiconductor structures, which semiconductor structures may also include optically active devices and control circuitry.