利用温度梯度法生长出了透明的γ-LiAlO2单晶,通过扫描电镜和X射线薄膜衍射分析了不同退火气氛对所切得的(001)晶片表面结构的影响.结果表明:1100℃/70h空气和真空中的退火处理使γ-LiAlO2晶片表层变成LiAl5O8多晶,而同温度富锂气氛退火可以有效地抑制锂的挥发,保持了晶格完整性并且提高了晶体质量.
参考文献
[1] | Ponce F A;Bour D P .Nitride-based Semiconductors for Blue and Green Light-emitting Devices[J].Nature,1997,386:351-359. |
[2] | Iwata K;AsahiH;Asami K 等.Gas Source Molecular Beam Epitaxy Growth of GaN on C-,A-,R-and M-plane Sappire and Silica Glass Substrates[J].Japanese Journal of Applied Physics,1997,36:L661-664. |
[3] | Liu L;Edgar J H .Substrate for Gallium Nitride Epitaxy[J].Materials Science and Engineering,2002,R37:61-127. |
[4] | Xu Ke;XuJun;Deng Peizhen et al.γ-LiA1O2 Single Crystal: a Novel Substrate for GaN Epitaxy[J].Journal of Crystal Growth,1998,193:127-132. |
[5] | WALTEREIT P;Brandt O;Trampert A 等.Nitride Semiconduetors Free of Electrostatic Fields for Efficient White Light-emitting Diodes[J].Letters To Nature,2000,406:865-867. |
[6] | Ng H M .Molecular-beam Epitaxy of GaN/AlxGa1-xN Multiple Quantum Wells on R-plane(10-12)Sappire Substrates[J].Applied Physics Letters,2002,80:4369. |
[7] | Bordui P F;Norwood R G;Jundt D H 等.Preparation and Characterization ofOff-congruent LithiumNiobate Crystals[J].Journal of Applied Physics,1992,71(02):875-879. |
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