Table 1 Decay time constants and amplitudes of TA spectra of P3HT and P3HT:PMMA films in the GSB and exciton regions; the dynamics is fitted by two-exponential decay OD(t) = A 1 exp(−t/t 1 ) + A 2 exp(−t/t 2 )
From: Effect of Confinement on Photophysical Properties of P3HT Chains in PMMA Matrix
Film composition | 0-1 (560 nm) | χ2 | 0-0 (610 nm) | χ2 | Exciton (1240 nm) | χ2 | |||
|---|---|---|---|---|---|---|---|---|---|
Neat P3HT | 7.0 ps (60%) | 295.1 ps (40%) | 0.976 | 5.3 ps (63%) | 424.7 ps (37%) | 0.977 | 2.0 ps (51%) | 40.2 ps (49%) | 0.996 |
P3HT:PMMA (1:50 weight ratio) | 1.8 ps (73%) | 202.6 ps (27%) | 0.980 | 1.9 ps (74%) | 299.0 ps (26%) | 0.979 | 0.6 ps (68%) | 18.9 ps (32%) | 0.990 |