Schottky Yapılar Üzerine İnceleme ve Analiz Çalışması

Yuksek sicaklik ve vakum altinda metal ve yari iletkenlerin siki kontak edilmesi durumunda olusan metal-yari iletken kontaklar uzerinde hala cok sayida teorik ve deneysel calisma yapiliyor olmasina ragmen metal ve yari iletken arasindaki bariyerin olusumu ve iletimi mekanizmalari henuz tam olarak aydinlatilmamistir. Bu yapilar hakkinda yapilan ilk detayli calismalar W. Schottky tarafindan yapildigindan, bu metal-yari iletken kontaklar genellikle Schottky diyotlar/yapilar olarak bilinir. Gecmisten gunumuze farkli fiziksel, kimyasal ve elektriksel ozelliklere sahip cesitli malzemeler kullanilarak arayuzey tabakalar olmaksizin veya yalitkan, polimer ve ferroelektrik gibi arayuzey tabakalar iceren Schottky yapilarin performansi arttirilmaya calisilmistir. Cok yuksek frekanslarda ve dusuk ileri on gerilimde calisabilmesi ve cok hizli anahtarlama kabiliyeti gibi diger diyotlarda bulunmayan ozellikleri, elektronik teknolojideki yaygin kullanimi ve gelisime acik teknolojiye sahip olmasi bilim insanlarini Schottky yapilari uzerinde calismaya tesvik etmektedir. Bu calismada, metal yariiletken ve arayuzey tabakasina sahip metal yariiletken Schottky yapilarin bu alanda yapilan bilimsel calismalar da goz onune alinarak incelenmesi, zaman icindeki gelisiminin gozlenmesi ile birlikte dunya ve Turkiye’de bu alanda yapilan akademik calismalarin istatistiksel analizi yapilmistir. Sonucta, Turkiye'nin bilimsel calismalar bakimindan dunyanin neresinde oldugunu aciga cikartmak amaclanmistir. Ayni zamanda farkli MY yapilar uzerine yapilmis bilimsel calismalarin Turkiye ve dunyada ne oranda karsilik gordugu de ortaya konulmustur. Web of Science veri tabaninda Science Citation Index (SCI) tarafindan taranan ve hem Turkiye’de hem de tum dunyada yapilan akademik calismalarin analizi veri madenciligi ile otomatik veri toplama yontemleri ve Structured Query Language (SQL) sunucu yonetim studyosu programi kullanilarak yapilmistir. Istatistiksel analiz sonuclari her alanda Schottky yapilar uzerine Turkiye ve dunyada yapilan akademik calismalarin nerede ise her sene artis gosterdigini gostermektedir.

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