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Rihana Khan,Sumair Faisal Ahmed,Muhammad Khalid,Bhawana Joshi 한국전기전자재료학회 2021 Transactions on Electrical and Electronic Material Vol.22 No.2
Enhancement in performance of Copper Zinc Tin Sulphide (Cu 2 ZnSnS 4 ) based thin film solar cell has been proposed using SCAPS-1D simulation program. The proposed cell structure Cu 2 ZnSnS 4 (CZTS) included CdS as buffer layer, CZTS as absorber layer, and n-doped ZnO as window layer. On these layers, the open circuit voltage (Voc), short circuit current density (Jsc), fi ll factor (FF), conversion effi ciency (η), and quantum effi ciency (QE) have been examined at the effect of temperature (280–400 K), thickness (500–4000 nm) series (1 Ω cm 2 ) and shunt (1000 Ω cm 2 ) resistances. The performance of proposed cell has been improved in terms of QE, Jsc, Voc, η, and QE with respect to the standard Mo/Cu 2 ZnSnS 4 /CdS/ZnO solar cell. However, by optimizing, we have successfully achieved the enhancement in efficiency of 19.64%, while Jsc, Voc, and FF are 24.22 mA cm −2 , 0.9489 V, and 86.13% were observed, respectively.
Memristor Based Full Adder Circuit for Better Performance
Muhammad Khalid,Sana Mukhtar,Mohammad Jawaid Siddique,Sumair Faisal Ahmed 한국전기전자재료학회 2019 Transactions on Electrical and Electronic Material Vol.20 No.5
In this paper, we have designed memristor based AND, OR, and exclusive-OR (XOR) gates. With the help of these gates, memristor based full adder circuit has proposed. Simulation results of the proposed circuit including all above gates have been reported. Prominent improvement of the proposed circuit has been represented in power consumption 54.74%, delay 14.84%, and lesser transistor count with respect to conventional circuit.