Investigation of Rb substitution on the thermoelectric parameters of BSCO Ceramic Materials

Abstract

Bu çalışma, güvenilirlik, sürdürülebilirlik ve temiz enerji gibi günümüzün ana temalarını adres gösterecektir. Bu amaç için,  katı-hal tekniğiyle Bi₂Sr_2-xRb_xCo₂O_y (x=0.0, 0.025, 0.050, 0.075, 0.100 ve 0.125) malzemeleri üretilmiştir. Özdirenç grafiğinden, saf ve 0.025Rb örnekleri yarıiletken bir davranış (dρ/dt<0), diğerlerinin ise metalik bir davranış (dρ/dt>0) sergilediği sonucuna ulaşılmıştır. Tüm örneklerin, tüm sıcaklık aralığında iletim mekanizmasının deşikler tarafından yönetildiğinin bir kanıtı olan Seebeck katsayılarının pozitif olduğu saptanmıştır.  Maksimum güç faktör değerleri, 650 ⁰C civarında 0.10Rb örneği için 0.19 Mw/K² olarak bulunmuştur. 

Keywords

• Seebeck Coefficient,Resistivity,Thermoelectric,Power Factör

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