How do you make a diode using transistors? Show a few realizations, What is the turn on voltages of your diodes in terms of transistor parameters

Vdd = 3 V and transistor parameters given below.

Table 2.1 Level 1 SPICE models for NMOS and PMOS devices. VTO = 0.7 LD = 0.08e-6 PB = 0.9 MJSW = 0.2 GAMMA = 0.45 UO = 350 CJ = 0.56e-3 CGDO = 0.4e-9 PHI = 0.9 LAMBDA = 0.1 CJSW = 0.35e-11 JS = 1.0e-8 NMOS Model LEVEL = 1 NSUB = 9e+14 TOX = 9e-9 MJ = 0.45 PMOS Model LEVEL = 1 NSUB = 5e+14 TOX = 9e-9 MJ = 0.5 VTO = -0.8 LD = 0.09e-6 PB = 0.9 MJSW = 0.3 GAMMA = 0.4 UO = 100 CJ = 0.94e-3 CGDO = 0.3e-9 PHI = 0.8 LAMBDA = 0.2 CJSW=0.32e-11 JS = 0.5e-8 Table 2.1 Level 1 SPICE models for NMOS and PMOS devices. VTO = 0.7 LD = 0.08e-6 PB = 0.9 MJSW = 0.2 GAMMA = 0.45 UO = 350 CJ = 0.56e-3 CGDO = 0.4e-9 PHI = 0.9 LAMBDA = 0.1 CJSW = 0.35e-11 JS = 1.0e-8 NMOS Model LEVEL = 1 NSUB = 9e+14 TOX = 9e-9 MJ = 0.45 PMOS Model LEVEL = 1 NSUB = 5e+14 TOX = 9e-9 MJ = 0.5 VTO = -0.8 LD = 0.09e-6 PB = 0.9 MJSW = 0.3 GAMMA = 0.4 UO = 100 CJ = 0.94e-3 CGDO = 0.3e-9 PHI = 0.8 LAMBDA = 0.2 CJSW=0.32e-11 JS = 0.5e-8