Bologna / 04_TCAD_laboratory_pn_junction_GBB_20150223H1655
.pdfUniform doping: resistors (2)
•IV characteristics is linear
•Click on n34 node click on “eye” button Inspect (All Files…)
•Select n34_des.plt dataset p_contact OuterVoltage To X-Axis TotalCurrent To Left-Y-Axis
no junction uniform material
mobility field-independent
carrier concentration field-independent
linear I-V characteristics
G. Betti Beneventi 51
Uniform doping: resistors (3)
•Select the node n34 click on the “eye” button Sentaurus Svisual (Select
File …) n34_000019_des.tdr new S-Visual instance Ok
• Select Precision cuts Create cuts Plot Band Diagram Ok
• Window deselect Plot_n34_000017_des
Spatial uniformity no junctions no space-charge regions no diffusion only drift
= =
No space charge yields (from
Poisson’s equation) constant which means constant and thus linear. Then, since at the boundary
(contacts) we assume equilibrium conditions which imply = , the only possibility is linear = .
G. Betti Beneventi 52
Bibliography
•J.M. Rabaey, A. Chandrakasan, B. Nikolic, Digitial Integrated Circuits: A Design
Perspective, Prentice Hall, 2003.
•Giovanni Ghione, Dispositivi per la Microelettronica, McGraw-Hill, 1998.
•Sentaurus Synopys User’s guides
G. Betti Beneventi 53