Synthesis of thermoelectric materials by electrochemical deposition
Jazyk: | ruština |
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Rok vydání: | 2021 |
Předmět: | |
DOI: | 10.18720/spbpu/3/2021/vr/vr21-4987 |
Popis: | ÐÐ°Ð½Ð½Ð°Ñ ÑабоÑа поÑвÑÑена ÑазÑабоÑке меÑодики ÑлекÑÑÐ¾Ñ Ð¸Ð¼Ð¸ÑеÑкого ÑинÑеза полÑпÑоводниковÑÑ ÑеÑмоÑлекÑÑиÑеÑÐºÐ¸Ñ Ð¼Ð°ÑеÑиалов на оÑнове ÑеллÑÑида виÑмÑÑа. ÐадаÑи, коÑоÑÑе ÑеÑалиÑÑ Ð² Ñ Ð¾Ð´Ðµ иÑÑледованиÑ: 1. ÐÑовеÑÑи анализ ÑÑÑеÑÑвÑÑÑÐ¸Ñ Ð¼ÐµÑодов ÑинÑеза полÑпÑоводниковÑÑ ÑеÑмоÑлекÑÑиÑеÑÐºÐ¸Ñ Ð¼Ð°ÑеÑиалов. 2. РазÑабоÑаÑÑ Ð°Ð»Ð³Ð¾ÑиÑм ÑинÑеза полÑпÑоводниковÑÑ ÑеÑмоÑлекÑÑиÑеÑÐºÐ¸Ñ Ð¼Ð°ÑеÑиалов. 3. РазÑабоÑаÑÑ ÑкÑпеÑименÑалÑнÑÑ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÑ Ð´Ð»Ñ ÑлекÑÑÐ¾Ñ Ð¸Ð¼Ð¸ÑеÑкого оÑÐ°Ð¶Ð´ÐµÐ½Ð¸Ñ ÑеÑмоÑлекÑÑиÑеÑÐºÐ¸Ñ Ð¼Ð°ÑеÑиалов. 4. ÐпÑеделиÑÑ ÑоÑÑÐ°Ð²Ñ Ð¸ ÑеÑмоÑлекÑÑиÑеÑкие ÑвойÑÑва ÑинÑезиÑованнÑÑ Ð¾Ð±ÑазÑов полÑпÑоводников. Ð ÑезÑлÑÑаÑе бÑли пÑоанализиÑÐ¾Ð²Ð°Ð½Ñ ÑÑÑеÑÑвÑÑÑие меÑÐ¾Ð´Ñ ÑинÑеза полÑпÑоводниковÑÑ ÑеÑмоÑлекÑÑиÑеÑÐºÐ¸Ñ Ð¼Ð°ÑеÑиалов. ÐÑедÑÑÐ°Ð²Ð»ÐµÐ½Ñ ÑезÑлÑÑаÑÑ Ð¿Ð¾ ÑазÑабоÑке меÑода ÑинÑеза ÑеÑмоÑлекÑÑиÑеÑÐºÐ¸Ñ Ð¼Ð°ÑеÑиалов меÑодом ÑлекÑÑÐ¾Ñ Ð¸Ð¼Ð¸ÑеÑкого оÑаждениÑ. СинÑез оÑÑÑеÑÑвлÑлÑÑ Ð² ÑÑÐµÑ ÑлекÑÑодной ÑÑейке Ñ Ð¸ÑполÑзованием поÑенÑиоÑÑаÑа â галÑваноÑÑаÑа Ð 40Ð¥ Ð¾Ñ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ «Electrochemical Instruments». ÐонÑÑÐ¾Ð»Ñ ÑоÑÑава и ÑÑÑÑкÑÑÑÑ ÑинÑезиÑованнÑÑ Ð¾Ð±ÑазÑов пÑоводилÑÑ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÑканиÑÑÑÑего ÑлекÑÑонного микÑоÑкопа. ТеÑмоÑлекÑÑиÑеÑкие Ñ Ð°ÑакÑеÑиÑÑик измеÑÑлиÑÑ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð¿ÑибоÑа NETZCH SBA 458 Nemesis®. ÐÑли полÑÑÐµÐ½Ñ Ð¿ÑоÑенÑнÑе ÑооÑноÑÐµÐ½Ð¸Ñ ÑоÑÑавов ÑинÑезиÑованнÑÑ Ð¾Ð±ÑазÑов. ÐÑклонение Ð¾Ñ ÑÑебÑемой ÑÑÐµÑ Ð¸Ð¾Ð¼ÐµÑÑии ÑоÑÑавлÑÐµÑ Ð¾Ñ 6-20%. This work is devoted to the development of a technique for the electrochemical synthesis of semiconductor thermoelectric materials based on bismuth telluride. Problems, which are solved in the course of the study: 1. To analyze the existing methods for the synthesis of semiconductor thermoelectric materials. 2. Develop an algorithm for the synthesis of semiconductor thermoelectric materials. 3. Develop an experimental setup for electrochemical deposition of thermoelectric materials. 4. Determine the compositions and thermoelectric properties of synthesized semiconductor samples. As a result, the existing methods for the synthesis of semiconductor thermoelectric materials were analyzed. The results of the development of a method for the synthesis of thermoelectric materials by the method of electrochemical deposition are presented. The synthesis was carried out in a three-electrode cell using a potentiostat - galvanostat P40X from Electrochemical Instruments. The composition and structure of the synthesized samples were monitored using a scanning electron microscope. Thermoelectric characteristics were measured using a NETZCH SBA 458 Nemesis® instrument. The percentage ratios of the compositions of the synthesized samples were obtained. The deviation from the required stoichiometry is 6-20%. |
Databáze: | OpenAIRE |
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