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Energy-recycling pixel for active-matrix organic light-emitting diode display
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Schematic circuit diagram of the energy-recycling AMOLED pixel. (b) The schematic diagram showing the structure of the implemented integration of a polycrystalline silicon TFT, an solar cell, and a top-emitting OLED.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Photo showing the fabricated sample under testing, in which the small bright spot is emission of the OLED under the TFT driving. (b) A closer view of the pixel area and the layout. (c) The optical micrograph of one complete pixel.

Image of FIG. 3.
FIG. 3.

Measured and calculated reflection spectra of the integrated [ cell] structure and the measured reflection spectrum of a conventional bottom-emitting OLED.

Image of FIG. 4.
FIG. 4.

(a) Output characteristics of the pixel TFT. (b) The TFT drain current (also the current through the OLED) as a function of . Inset: electroluminescence spectrum of the OLED.

Image of FIG. 5.
FIG. 5.

(a) Spectral responses of the integrated solar cell before (solid line) and after (dashed line) the deposition of OLEDs. (b) The characteristics of the integrated solar cell in the dark, under the illumination of an AM1 solar simulator (with an intensity of 1 ) and under the illumination of the integrated OLED in the pixel (with a driving current of , an externally observed brightness of ).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Energy-recycling pixel for active-matrix organic light-emitting diode display