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Abstrak :
Penggunaaan Single Electron Transistor SET merupakan salah satu pendekatan yang dilakukan untuk menggantikan penggunaan transistor. Meskipun SET memiliki ukuran divais dan konsumsi daya yang lebih kecil dibanding transistor biasa, suhu operasionalnya masih sangat rendah dibawah 50 Kelvin. Keterbatasan temperatur operasional pada SET ini menjadi salah satu masalah yang masih didiskusikan secara luas dalam pengaplikasian SET secara global. Skripsi ini melaporkan hasil simulasi rangkaian SET dengan Quantum Dot yang disusun seri dan dilihat perbandingan antara temperatur maksimal dengan jumlah Quantum Dot. Hasil simulasi di perangkat lunak SIMON 2.0 menunjukkan bahwa bertambahnya jumlah Quantum Dot yang disusun seri akan meningkatkan batas temperatur operasional dari SET. Dengan menggunakan pendekatan Multiple Quantum Dot, suhu operasional dari SET dapat mencapai 120 Kelvin. ......The usage of Single Electron Transistor SET is one of the alternatives to replace the usage of transistor. Although SET has a smaller size and power consumption compared to normal transistors, the operational temperature is still fairly low below 50 Kelvin . This limited operational temperature became the most controversial problem that is still being discussed before applying SET worldwide. This Undergraduate Thesis reports the result from a simulation of a SET circuit is designed with Quantum Dot connected in series and the connection between maximum operational temperature and the amount of Quantum Dot in series will be observed. The result of the simulation from SIMON 2.0 software shows that the increase in Quantum Dot aligned in series will increase the maximum operational temperature. Using the Multiple Quantum Dot approach, the operational temperature of the SET can reach up to 120 Kelvin.

Abstrak :
Electrons in a single electron transistor (SET) are transported one by one from source to drain based on the coulomb blockade mechanism. The transport rate is sensitively influenced by the presence of event a single electron charge located near the quantum dot. Based on this characteristic, we propose a Double Quantum Dot (DQD) SET to manipulate the presence of an electron in Quantum Dot (QD) as an implementation of a single-electron logic concept. The existence of an electron in the QD is used to represent logic 0 (no electron in QD) or logic 1 (an electron in QD). The logic states are sensed by a SET charge detector. Design of circuit based on DQD and SET charge detector are simulated by using SIMON 2.0 software. From the simulation, we have successfully developed a two-bit logic circuit by controlling the presence of an electron in DQD. We found that the existence of an electron in QD can be controlled by application of a gate voltage larger than 190µV. Gate should be separated from QD by a non-tunnel capacitor of 500 aF. No larger than 1 aF of interdot tunnel capacitance is required to isolate the QD from one to another. The existence of an electron in QD is successfully detected by SET based charge detector.