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New design approaches of reversible BCD encoder using Peres and Feynman gates
Sheba Diamond Thabah,Prabir Saha 한국통신학회 2020 ICT Express Vol.6 No.1
This paper proposes two new design approaches for decimal to binary-coded-decimal (BCD) encoder using reversible logic through Peres gate (PG) and Feynman gate (FG) which consume 10 and 11 gates respectively to realize such circuitry. Gates have been arranged properly to minimize the gate count (GC) followed by the reduction of the quantum cost (QC) and garbage outputs (GO). The proposed designs have an improvement at least up to 45%, 40%, and 50% of GC, GO and QC respectively from the best state of the art designs.
Front Surface Grid Design for High Efficiency Solar Cells
Utpal Gangopadhyay,김경해,정성욱,Prabir Kanti Basu,Suresh Kumar Dhungel,Swapan Kumar Dutta,Hiranmoy Saha,이준신 한국전기전자재료학회 2005 Transactions on Electrical and Electronic Material Vol.6 No.2
Standard crystalline solar cells are generally fabricated with the front grid pattern of silver paste contact. We have reported a detailed theoretical analysis of the proposed segmented cross grid line pattern in this paper. This work was carried out for the optimization of spacing and width of grid finger, main busbar and sub-busbar. The overall electrical and optical losses due to front contact were brought down to 10 % or even less as compared to the usual loss of 15 % or more in the conventional screen printed silver paste technology by choosing proper grid pattern and optimizing the grid parameters. The total normalized power loss for segmented mesh grid with plated metal contact was also observed and the total power loss could be brought down to 10.04 % unlike 11.57 % in the case of continuous grid and plated contact. This paper is able to outline the limitations of conventional screen printed contact.