{"id":2638,"date":"2011-11-16T13:41:00","date_gmt":"2011-11-16T12:41:00","guid":{"rendered":"https:\/\/forschungsnetzwerk-chim.de\/?post_type=publikationen&#038;p=2638"},"modified":"2024-01-26T12:02:58","modified_gmt":"2024-01-26T11:02:58","slug":"optical-anisotropy-of-a-plane-al0-8in0-2n-grown-on-an-a-plane-gan-pseudosubstrate","status":"publish","type":"publikationen","link":"https:\/\/forschungsnetzwerk-chim.de\/en\/publications\/optical-anisotropy-of-a-plane-al0-8in0-2n-grown-on-an-a-plane-gan-pseudosubstrate\/","title":{"rendered":"Optical anisotropy of\u00a0a-plane Al0.8In0.2N grown on an\u00a0a-plane GaN pseudosubstrate"},"content":{"rendered":"\n<p>The optical properties of\u00a0<em>a<\/em>-plane Al<sub>1\u2212<em>x<\/em><\/sub>In<sub><em>x<\/em><\/sub>N grown by metal-organic vapor phase epitaxy on an\u00a0<em>a<\/em>-plane GaN\/<em>r<\/em>-plane sapphire template are reported. X-ray diffraction yielded an In content of \u223c20%. The ordinary and extraordinary dielectric functions (DFs) were obtained by spectroscopic ellipsometry in the spectral range from 1\u2009eV up to 6\u2009eV at room temperature. By fitting the experimentally obtained complex DF, the inter-band transitions\u00a0<em>E<\/em><sub>A<\/sub>\u00a0and\u00a0<em>E<\/em><sub>B<\/sub>, which are allowed for configurations\u00a0<img decoding=\"async\" alt=\"equation image\" src=\"https:\/\/onlinelibrary.wiley.com\/cms\/asset\/eb829679-6568-48c9-8fc6-e3f48d5e16f1\/tex2gif-ueqn-1.gif\"\/>\u00a0and\u00a0<img decoding=\"async\" alt=\"equation image\" src=\"https:\/\/onlinelibrary.wiley.com\/cms\/asset\/4c4b348e-64e0-458a-bb86-38dcbfaa866a\/tex2gif-ueqn-2.gif\"\/>, respectively, were determined. A redshift of \u223c200\u2009meV is found for the transition\u00a0<em>E<\/em><sub>B<\/sub>\u00a0with respect to transition\u00a0<em>E<\/em><sub>A<\/sub>\u00a0attributed to the optical selection rules. Furthermore, the ordinary and extraordinary refractive indices in the transparent region (below the band gap) are represented in the analytical form. The AlInN alloy shows the positive birefringence and the difference between the extraordinary and ordinary refractive index\u00a0<em>n<\/em><sub>e<\/sub>\u2009\u2212\u2009<em>n<\/em><sub>o<\/sub>\u00a0is defined to be 0.068 at photon energy of 3\u2009eV. Finally, the ordinary and extraordinary high-energy dielectric constants were estimated.<\/p>\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1002\/pssa.201100066#\"><\/a><\/h2>\n","protected":false},"excerpt":{"rendered":"<p><b>Publication:<\/b> 2011<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false},"beteiligte":[],"class_list":["post-2638","publikationen","type-publikationen","status-publish","hentry","publikationen_category-physical-chemistry"],"acf":[],"_links":{"self":[{"href":"https:\/\/forschungsnetzwerk-chim.de\/en\/wp-json\/wp\/v2\/publikationen\/2638","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forschungsnetzwerk-chim.de\/en\/wp-json\/wp\/v2\/publikationen"}],"about":[{"href":"https:\/\/forschungsnetzwerk-chim.de\/en\/wp-json\/wp\/v2\/types\/publikationen"}],"wp:attachment":[{"href":"https:\/\/forschungsnetzwerk-chim.de\/en\/wp-json\/wp\/v2\/media?parent=2638"}],"wp:term":[{"taxonomy":"beteiligte","embeddable":true,"href":"https:\/\/forschungsnetzwerk-chim.de\/en\/wp-json\/wp\/v2\/beteiligte?post=2638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}