Stretchable device and electronic device
A stretchable device includes a stretchable substrate, and a plurality of optoelectronic diodes on the stretchable substrate. At least one optoelectronic diode includes a first electrode and a second electrode, and an active layer between the first electrode and the second electrode. The active layer includes a first semiconductor, a second semiconductor having different electrical characteristics from the first semiconductor, and an insulating elastomer.
1. A stretchable device, comprising:
a stretchable substrate; and
a plurality of optoelectronic diodes on the stretchable substrate,
wherein each optoelectronic diode includes,
an anode and a cathode, and
an active layer between the anode and the cathode, the active layer including
a first semiconductor,
a second semiconductor having different electrical characteristics from the first semiconductor, and
an insulating elastomer, the insulating elastomer being a copolymer, the copolymer including at least one first structural unit and at least one second structural unit different from the first structural unit,
wherein the first structural unit includes a styrene structural unit, an olefin structural unit, a urethane structural unit, an ether structural unit, or any combination thereof,
wherein the second structural unit includes an ethylene structural unit, a propylene structural unit, a butylene structural unit, an isobutylene structural unit, a butadiene structural unit, an isoprene structural unit, or any combination thereof, and
wherein a weight ratio of the first structural unit to the second structural unit is about 0.01 to about 0.5.
2. The stretchable device of claim 1 , wherein at least one of the first semiconductor or the second semiconductor is an organic semiconductor.
3. The stretchable device of claim 1 , wherein at least one of the first semiconductor or the second semiconductor is a polymeric semiconductor.
4. The stretchable device of claim 1 , wherein the insulating elastomer comprises styrene-ethylene-butylene-styrene (SEBS), styrene-ethylene-propylene-styrene (SEPS), styrene-butadiene-styrene (SBS), styrene-isobutylene-styrene (SIBS), or any combination thereof.
5. The stretchable device of claim 1 , wherein the insulating elastomer is included in the active layer in an amount that is greater than or equal to an amount of the first semiconductor or the second semiconductor in the active layer.
6. The stretchable device of claim 1 , wherein the insulating elastomer is included in the active layer in an amount of about 30 wt % to about 75 wt % based on a total content of the first semiconductor, the second semiconductor, and the insulating elastomer in the active layer.
7. The stretchable device of claim 1 , wherein the active layer comprises a mixture of the first semiconductor, the second semiconductor, and the insulating elastomer.
8. The stretchable device of claim 1 , wherein the anode or the cathode is a stretchable electrode.
9. The stretchable device of claim 1 , further comprising:
a connection wiring electrically connecting adjacent optoelectronic diodes of the plurality of optoelectronic diodes,
wherein the connection wiring comprises a stretchable wiring.
10. The stretchable device of claim 1 , wherein
at least one first optoelectronic diode of the plurality of optoelectronic diodes includes a photosensor configured to absorb light and convert the absorbed light into an electrical signal, and
the active layer of the at least one first optoelectronic diode is a photoelectric conversion layer.
11. The stretchable device of claim 10 , wherein each semiconductor of the first semiconductor and the second semiconductor in the photoelectric conversion layer is a p-type semiconductor or an n-type semiconductor.
12. The stretchable device of claim 10 , wherein
at least one second optoelectronic diode of the plurality of optoelectronic diodes is a light emitting diode that is configured to emit light, and
the active layer of the at least one second optoelectronic diode is a light emitting layer.
13. The stretchable device of claim 12 , wherein each semiconductor of the first semiconductor and the second semiconductor in the light emitting layer is a host material or a dopant material.
14. The stretchable device of claim 1 , wherein
the plurality of optoelectronic diodes includes a plurality of first optoelectronic diodes and a plurality of second optoelectronic diodes,
the plurality of first optoelectronic diodes are photosensors that are each configured to absorb light and convert the absorbed light into an electrical signal,
the plurality of second optoelectronic diodes are light emitting diodes that are each configured to emit light, and
the photosensors and the light emitting diodes are arranged along an in-plane direction of the stretchable substrate to establish an array of optoelectronic diodes.
15. The stretchable device of claim 1 , wherein the stretchable device is a bio signal sensor.
16. The stretchable device of claim 1 , wherein the stretchable device is a display panel.
17. A stretchable device, comprising:
a stretchable substrate; and
an optoelectronic diode on the stretchable substrate, the optoelectronic diode including
an anode and a cathode, and
an active layer between the anode and the cathode, the active layer including
a first semiconductor,
a second semiconductor having different electrical characteristics from the first semiconductor, and
an insulating elastomer.
18. The stretchable device of claim 17 , wherein the optoelectronic diode is a photosensor or a light emitting diode.
19. The stretchable device of claim 17 , further comprising:
a first array of optoelectronic diodes that are arranged along an in-plane direction of the stretchable substrate, the first array of optoelectronic diodes including the optoelectronic diodes,
wherein the first array of optoelectronic diodes are exclusively photosensors or light emitting diodes.
20. The stretchable device of claim 19 , further comprising:
a second array of optoelectronic diodes that are arranged along the in-plane direction of the stretchable substrate,
wherein the first array of optoelectronic diodes are exclusively photosensors and the second array of optoelectronic diodes are exclusively light emitting diodes.
21. The stretchable device of claim 17 , wherein the first semiconductor, the second semiconductor, and the insulating elastomer are included in the active layer in a weight ratio of 1.3:1.0:1.15 to 1.3:1.0:3.5.