Deep-eutectic melt growth of nitride crystals
First Claim
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1. A method of forming a crystalline structure, the method comprising:
- providing, at a growth temperature, a liquid (i) consisting essentially of a mixture of AlN and a non-AlN nitride compound, and (ii) having a quality factor greater than approximately 0.14; and
forming solid AlN from the liquid, the solid AlN having an oxygen concentration less than 100 parts per million by weight,wherein (i) the quality factor is defined as Q=Δ
T(K)/Tlm(K), Q being the quality factor, Tlm being the lower of the melting points of AlN and the non-AlN nitride compound in degrees Kelvin, and Δ
T being the difference between Tlm and the minimum liquidus temperature of the pseudo-binary system formed by AlN and the non-AlN nitride compound, and (ii) the growth temperature is lower than a melting point of AlN.
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Abstract
In accordance with various embodiments, crystalline structures are formed by providing, at a growth temperature, a liquid comprising AlN and having a quality factor greater than approximately 0.14 and forming solid AlN from the liquid, the growth temperature being lower than the melting point of AlN.
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23 Claims
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1. A method of forming a crystalline structure, the method comprising:
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providing, at a growth temperature, a liquid (i) consisting essentially of a mixture of AlN and a non-AlN nitride compound, and (ii) having a quality factor greater than approximately 0.14; and forming solid AlN from the liquid, the solid AlN having an oxygen concentration less than 100 parts per million by weight, wherein (i) the quality factor is defined as Q=Δ
T(K)/Tlm(K), Q being the quality factor, Tlm being the lower of the melting points of AlN and the non-AlN nitride compound in degrees Kelvin, and Δ
T being the difference between Tlm and the minimum liquidus temperature of the pseudo-binary system formed by AlN and the non-AlN nitride compound, and (ii) the growth temperature is lower than a melting point of AlN. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification