Characterization of silicon nanowire biosensors and solar cells

Author

Myung-Dong Ko ; Tai-Uk Rim ; Chang-Ki Baek ; Dae Mann Kim ; Yoon-Ha Jeong

Author_Institution

Dept. of Electr. Eng., POSTECH, Pohang, South Korea

fYear

2012

fDate

Oct. 29 2012-Nov. 1 2012

Firstpage

1

Lastpage

4

Abstract

In this paper, the characteristics of the silicon nanowire (SiNW) based solar cells and biologically modified field-effect transistor (BioFET) are presented and discussed. The pH responses of the BioFETs clearly showed a sensitivity of 40 mV/pH. Also, the lateral shifts of transfer I_D-V_G curves were observed, depending on the pH value of the solution. Moreover the signal to noise ratio and sensing limit were evaluated, using the low frequency noise data. The solar cells showed higher light absorption and power convergence efficiency (PCE), compared with thin film solar cells. The various structural parameters of the solar cell have been optimized with the use of TCAD simulation and the 15 % improvement of PCE was achieved by adjusting the cell length.

Keywords

biosensors; elemental semiconductors; field effect transistors; light absorption; nanosensors; silicon; solar cells; BioFET; PCE; Si; TCAD simulation; biologically modified field-effect transistor; light absorption; pH value; power convergence efficiency; silicon nanowire biosensors; solar cells; transfer curves; Logic gates; Photovoltaic cells; Power demand; Sensitivity; Signal to noise ratio; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2012 IEEE 11th International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4673-2474-8

Type

conf

DOI

10.1109/ICSICT.2012.6467952

Filename

6467952