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- W2005461910 abstract "Recently published near field scanning optical measurements (NSOM) on the conjugated polymer MEH-PPV exhibited a strong dependence of the photoluminescence intensity on the applied electric fields at the NSOM tip. The observed effect is apparently due to exciton quenching by hole polarons. In the present paper, a model “single carrier” electro-modulated-photoluminescence device is used to further explore the exciton quenching effect of hole polarons in MEH-PPV. Hole polarons, created by charge injection from an ITO electrode, are observed to dramatically quench the photoluminescence intensity of MEH-PPV. The Stern-Volmer quenching efficiency of a hole polaron in conjugated polymer thin films was measured to be 390 nm3. This value, and other data presented herein, are consistent with the published NSOM photoluminescence modulation measurements and offer further evidence that hole polarons are efficient photoluminescence quenchers in MEH-PPV." @default.
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- W2005461910 date "2004-10-01" @default.
- W2005461910 modified "2023-09-27" @default.
- W2005461910 title "Efficient Exciton Quenching by Hole Polarons in the Conjugated Polymer MEH-PPV" @default.
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- W2005461910 doi "https://doi.org/10.1560/phge-rr3p-5p7v-dgcm" @default.
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