The growth of Gallium Oxide by the method of metalorganic epitaxy, research of the dependence of the growth rate on process parameters
Jazyk: | ruština |
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Rok vydání: | 2022 |
Předmět: | |
DOI: | 10.18720/spbpu/3/2022/vr/vr22-1616 |
Popis: | Тема вÑпÑÑкной квалиÑикаÑионной ÑабоÑÑ: «ÐолÑÑение окÑида Ð³Ð°Ð»Ð»Ð¸Ñ Ð¼ÐµÑодом ÑпиÑакÑии из меÑаллооÑганиÑеÑÐºÐ¸Ñ Ñоединений, иÑÑледование завиÑимоÑÑи ÑкоÑоÑÑи ÑоÑÑа Ð¾Ñ Ð¿Ð°ÑамеÑÑов пÑоÑеÑÑа». ÐÐ°Ð½Ð½Ð°Ñ ÑабоÑа поÑвÑÑена иÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¼ÐµÑодики ÑпиÑакÑиалÑного ÑоÑÑа Ga2O3 на глÑбоко модеÑнизиÑованной ÑÑÑановке Epiquip меÑодом ÐÐСÐФÐ, поиÑÐºÑ Ð¾Ð¿ÑималÑнÑÑ ÑоÑÑовÑÑ ÑÑловий, а Ñакже изÑÑÐµÐ½Ð¸Ñ Ð·Ð°Ð²Ð¸ÑимоÑÑи ÑкоÑоÑÑи ÑоÑÑа Ð¾Ñ ÑазлиÑнÑÑ Ð¿Ð°ÑамеÑÑов пÑоÑеÑÑа. ÐадаÑи, ÑеÑаемÑе в Ñ Ð¾Ð´Ðµ ÑабоÑÑ: опÑимизаÑÐ¸Ñ ÑоÑÑовÑÑ ÑÑловий Ñ ÑелÑÑ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ñ ÐºÑиÑÑаллиÑеÑÐºÐ¸Ñ Ñлоев β-Ga2O3; пÑоведение ÑÑда ÑоÑÑовÑÑ Ð¿ÑоÑеÑÑов Ñ ÑелÑÑ ÑÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¸Ñ Ð·Ð°Ð²Ð¸ÑимоÑÑи ÑкоÑоÑÑи ÑоÑÑа Ð¾Ñ ÑазлиÑнÑÑ Ð¿Ð°ÑамеÑÑов пÑоÑеÑÑа; пÑоведение ÑÑда пÑоÑеÑÑов по оÑÐ°Ð¶Ð´ÐµÐ½Ð¸Ñ Ð¼ÐµÑаллиÑеÑкого Ð³Ð°Ð»Ð»Ð¸Ñ Ð´Ð»Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ñ ÑемпеÑаÑÑÑной завиÑимоÑÑи ÑкоÑоÑÑи оÑаждениÑ; ÑÑавнение вÑÐµÑ ÑезÑлÑÑаÑов Ñ ÑоÑÑом GaN в аналогиÑнÑÑ ÑÑловиÑÑ Ñ Ð¿Ð¾ÑледÑÑÑими вÑводами об ÑнеÑгиÑÑ Ð°ÐºÑиваÑии. Ðа пеÑвом ÑÑапе ÑабоÑÑ Ð±Ñли полÑÑÐµÐ½Ñ Ð¾Ð±ÑазÑÑ Ñ Ð²ÑÑоким ÑодеÑжанием ÑглеÑода, вÑделÑвÑегоÑÑ Ð¿Ñи пиÑолизе меÑаллооÑганики. ÐÐ»Ñ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ñ ÑиÑÑÑÑ Ñлоев β-Ga2O3 бÑло пÑинÑÑо ÑеÑение об ÑвелиÑении поÑока киÑлоÑода по оÑноÑÐµÐ½Ð¸Ñ Ðº поÑÐ¾ÐºÑ Ð³Ð°Ð»Ð»Ð¸Ñ. ÐпÑималÑнÑм ÑооÑноÑением молÑнÑÑ Ð¿Ð¾Ñоков иÑÑоÑников оказалоÑÑ O/Ga = 4ê103. Ð ÑезÑлÑÑаÑе ÑÑда пÑоÑеÑÑов по изÑÑÐµÐ½Ð¸Ñ ÑкоÑоÑÑи ÑоÑÑа и оÑÐ°Ð¶Ð´ÐµÐ½Ð¸Ñ Ð±Ñли ÑÐ´ÐµÐ»Ð°Ð½Ñ Ð²ÑÐ²Ð¾Ð´Ñ Ð¾Ð± акÑиваÑионнÑÑ Ð¿ÑоÑеÑÑÐ°Ñ , вÑÑиÑÐ»ÐµÐ½Ñ ÑнеÑгии акÑиваÑии. ÐÑи даннÑе могÑÑ Ð±ÑÑÑ Ð¸ÑполÑÐ·Ð¾Ð²Ð°Ð½Ñ Ð´Ð»Ñ Ð´Ð°Ð»ÑнейÑÐ¸Ñ ÑеоÑеÑиÑеÑÐºÐ¸Ñ ÑаÑÑеÑов Ñ Ð¸Ð¼Ð¸ÑеÑÐºÐ¸Ñ Ð¿ÑоÑеÑÑов, пÑоиÑÑ Ð¾Ð´ÑÑÐ¸Ñ Ð²Ð¾ вÑÐµÐ¼Ñ ÑпиÑакÑии Ga2O3. The subject of the graduate qualification work is «The growth of Gallium Oxide by the method of metalorganic epitaxy, research of the dependence of the growth rate on process parameters». The given work is devoted to the study of the method of epitaxial growth of Ga2O3 on a deeply modernized Epiquip installation by the MOCVD method, the search for optimal growth conditions, and the study of the dependence of the growth rate on various process parameters. The following tasks were solved in the course of the study: optimization of growth conditions in order to obtain crystalline layers of β-Ga2O3; carrying out a number of growth processes in order to study the dependence of the growth rate on various process parameters; carrying out a number of processes for the deposition of metallic gallium to obtain the temperature dependence of the deposition rate; comparison of all results with the growth of GaN in the same conditions with subsequent conclusions about the activation energies.At the first stage of the work, samples with a high carbon concentration released during the pyrolysis of metalorganics were obtained. To obtain pure β-Ga2O3 layers, it was decided to increase the oxygen flux relative to the gallium flux. It turned out that the optimal ratio of the molar fluxes of the sources is O/Ga = 4ê103. As a result of several processes to study the rate of growth and deposition, conclusions were made about activation processes and the activation energies were calculated. These data can be used for further theoretical calculations of chemical processes occurring during Ga2O3 epitaxy. |
Databáze: | OpenAIRE |
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