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Evolution of luminance by voltage in organic light-emitting diodes
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10.1063/1.2159563
/content/aip/journal/apl/88/1/10.1063/1.2159563
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/1/10.1063/1.2159563
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The degradation behaviors of the luminance (a) and the voltage (b) for about under the constant current densities of (open squares) and (open circles), respectively. The decrease of the normalized luminance (a) indicates that the luminance decays with time. The decrease of the inverse normalized voltage (b) indicates that the voltage rises with time. The luminance decayed with time from for and from for , while the voltage rose with time from for and from for .

Image of FIG. 2.
FIG. 2.

The time dependences of the luminance and the voltage: vs (a), and vs (b), for the current densities of (open squares) and (open circles), respectively. The straightness (solid lines) indicates the validity of the stretched exponential behaviors in the luminance decay (a) and the voltage rise (b).

Image of FIG. 3.
FIG. 3.

The results of the estimated decay exponent, . Here, the solid lines are given by Eq. (4) and the parameters, , , , and , which were estimated from the linear fits of the luminance and the voltage in Fig. 2. The open squares (circles) are obtained from the data of the luminance and the voltage using Eq. (5) for the current density of . This shows that decreases with time and is higher at higher initial luminance.

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/content/aip/journal/apl/88/1/10.1063/1.2159563
2006-01-03
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Evolution of luminance by voltage in organic light-emitting diodes
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/1/10.1063/1.2159563
10.1063/1.2159563
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