Review Article
Specifics and Challenges to Flexible Organic Light-Emitting Devices
Table 1
Main properties of the commercially available 100
m thick plastic substrates for flexible OLEDs application [
8–
12].
| Properties | PET | PEN | PI | PC |
| Flexibility (tensile strength, MPa) | 230 | 200 | 150 | 75 | Elasticity (Young modulus, GPa) | 2.8–3 | 3–5 | 2-3 | 2.4 | Thermal conductivity, W/m·K | 0.20 | 0.15 | 0.25 | 0.22 | Coefficient of thermal expansion, m/°C | 33 | 20 | 30 | 66 | Transition temperature, °C | 90–100 | 120 | 270 | 145 | Transparency in the visible region, % | >90 | 88 | 65–70 | 90 | Water absorption, % | 0.6 | 0.4 | 2.9 | 0.3 | Solvent resistance | Good | Good | Good | Poor |
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