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| Model depicting energy transfer from disordered to |
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| ordered phase |
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| Formation
of the ordered phase depends on nucleation and growth |
| For
athermal nucleation (all nucleation occurs at t=0) n=1 |
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| Polymer |
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| thin film |
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| Nucleation |
| then growth |
| Substrate |
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| • | 1st: Low absorption in ordered phase but
efficient PL |
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| • | 2nd:
High absorption in disordered phase and exciton |
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| migration to the ordered region (I.e., red arrows) |
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| • | One-dimensional growth
increases relative PL from |
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| 1st process |
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