1. A system for controlling a solar cell lighting apparatus that integratedly manages a plurality of solar cell lighting apparatuses, each solar cell lighting apparatus including a light emitting source to emit light by a discharge power of a secondary battery and a control unit to adjust a magnitude of the discharge power, the system comprising:
a main control unit to collect charge capacity information of each of the secondary batteries included in the plurality of solar cell lighting apparatuses from the control unit of each of the plurality of solar cell lighting apparatuses, determine at least one solar cell lighting apparatus needed to control a light intensity based on the charge capacity collected from the secondary batteries, and output a light intensity control signal to the control unit of the determined solar cell lighting apparatus, to achieve charge capacity balancing of the secondary batteries.
2. The system according to claim 1, wherein the main control unit determines a solar cell lighting apparatus including a secondary battery having a higher charge capacity than a preset reference charge capacity as the solar cell lighting apparatus needed to increase the light intensity, and outputs the light intensity control signal for directing an increase in light intensity to the control unit of the determined solar cell lighting apparatus.
3. The system according to claim 2, wherein the main control unit outputs, to the control unit of the determined solar cell lighting apparatus, the light intensity control signal for directing an increase in light intensity in proportion to a difference between the reference charge capacity and the charge capacity of the secondary battery of the determined solar cell lighting apparatus.
4. The system according to claim 2, wherein when a solar cell lighting apparatus including a secondary battery having a lower charge capacity than a preset reference charge capacity is close to the solar cell lighting apparatus determined to increase the light intensity, the main control unit determines the solar cell lighting apparatus including the secondary battery having the lower charge capacity than the preset reference charge capacity as the solar cell lighting apparatus needed to decrease the light intensity, and outputs the light intensity control signal for directing a decrease in light intensity to the control unit of the determined solar cell lighting apparatus.
5. The system according to claim 4, wherein the main control unit outputs, to the control unit of the determined solar cell lighting apparatus, the light intensity control signal for directing a decrease in light intensity in proportion to a difference between the reference charge capacity and the charge capacity of the secondary battery of the determined solar cell lighting apparatus.
6. The system according to claim 4, wherein the main control unit outputs, to the control unit of the solar cell lighting apparatus determined to decrease the light intensity, the light intensity control signal for decreasing the light intensity of the solar cell lighting apparatus determined to decrease the light intensity in proportion to the increased light intensity of the adjacent solar cell lighting apparatus.
7. The system according to claim 1, wherein the main control unit collects extent of degradation information of each of the secondary batteries included in the plurality of solar cell lighting apparatuses from the control unit of each of the solar cell lighting apparatuses, and controls the light intensity of each of the solar cell lighting apparatuses in consideration of both the charge capacity and the extent of degradation for each of the secondary batteries included in the solar cell lighting apparatuses.
8. The system according to claim 1, wherein the main control unit receives weather information from an external server, and controls the light intensity of each of the solar cell lighting apparatuses in consideration of both the weather information and the charge capacity for each of the secondary batteries included in the solar cell lighting apparatuses.
9. The system according to claim 8, wherein the weather information includes information about sunrisesunset time, sunless day, or moonlight.
10. The system according to claim 1, wherein each of the solar cell lighting apparatuses further comprises a light intensity sensor,
wherein the main control unit collects light intensity information sensed by the light intensity sensor from the control unit of each of the solar cell lighting apparatuses, and controls the light intensity of each of the solar cell lighting apparatuses in consideration of both the collected light intensity information and the charge capacity for each of the secondary batteries included in the solar cell lighting apparatuses.
11. A method of controlling a solar cell lighting apparatus that integratedly controls a plurality of solar cell lighting apparatuses connected to one another via a communication network, each solar cell lighting apparatus including a light emitting source to emit light by a discharge power of a secondary battery and a control unit to adjust a magnitude of the discharge power, the method comprising:
(a) receiving charge capacity information of each of the secondary batteries included in the plurality of solar cell lighting apparatuses from the control unit of each of the solar cell lighting apparatus;
(b) determining at least one solar cell lighting apparatus needed to control a light intensity using the charge capacity information; and
(c) outputting a light intensity control signal for directing an increase or decrease in light intensity to the control unit of the determined solar cell lighting apparatus.
12. The method according to claim 11, wherein the step (b) comprises determining a solar cell lighting apparatus including a secondary battery having a higher charge capacity than a preset reference charge capacity as the solar cell lighting apparatus needed to increase the light intensity, and the step (c) comprises outputting the light intensity control signal for directing an increase in light intensity to the control unit of the determined solar cell lighting apparatus.
13. The method according to claim 12, wherein the step (c) comprises outputting, to the control unit of the determined solar cell lighting apparatus, the light intensity control signal for directing an increase in light intensity in proportion to a difference between the reference charge capacity and the charge capacity of the determined solar cell lighting apparatus.
14. The method according to claim 12, wherein the step (b) comprises, when a solar cell lighting apparatus including a secondary battery having a lower charge capacity than a preset reference charge capacity is close to the solar cell lighting apparatus determined to increase the light intensity, determining the solar cell lighting apparatus including the secondary battery having the lower charge capacity than the preset reference charge capacity as the solar cell lighting apparatus needed to decrease the light intensity, and the step (c) comprises outputting the light intensity control signal for directing a decrease in light intensity to the control unit of the determined solar cell lighting apparatus.
15. The method according to claim 14, wherein the step (c) comprises outputting, to the control unit of the determined solar cell lighting apparatus, the light intensity control signal for directing a decrease in light intensity in proportion to a difference between the reference charge capacity and the charge capacity of the determined solar cell lighting apparatus.
16. The method according to claim 14, wherein the step (c) comprises outputting, to the control unit of the solar cell lighting apparatus determined to decrease the light intensity, the light intensity control signal for decreasing the light intensity of the solar cell lighting apparatus determined to decrease the light intensity in proportion to the increased light intensity of the adjacent solar cell lighting apparatus.
17. The method according to claim 11, wherein the step (a) comprises further receiving extent of degradation information of each of the secondary batteries included in the plurality of solar cell lighting apparatuses from the control unit of each of the solar cell lighting apparatuses, and the step (b) comprises determining at least one solar cell lighting apparatus needed to control a light intensity in consideration of both the charge capacity information and the extent of degradation information.
18. The method according to claim 11, wherein the step (a) comprises further receiving weather information from an external server, and the step (b) comprises at least one solar cell lighting apparatus needed to control a light intensity in consideration of both the charge capacity information and the weather information.
19. The method according to claim 18, wherein the weather information includes information about sunrisesunset time, sunless day, or moonlight.
20. The method according to claim 11, wherein each of the solar cell lighting apparatuses further comprises a light intensity sensor,
wherein the step (a) comprises further receiving light intensity information sensed by the light intensity sensor from the control unit of each of the solar cell lighting apparatuses, and the step (b) comprises at least one solar cell lighting apparatus needed to control a light intensity in consideration of both the charge capacity information and the light intensity information.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A self-aligned gate based nano FET. The conductive channel of this FET is one dimension conductive nano material; source electrode and drain electrode locate at both ends of the conductive channel respectively; gate dielectric is oxide layer grown by ALD; area between source electrode and drain electrode, opposite sidewalls and a part of upper area of source and drain electrodes are covered by oxide layer; gate electrode is grown on gate dielectric by E-beam evaporation, thermal evaporation or magnetron sputtering; total thickness of gate dielectric and gate electrode is less than source electrode or drain electrode; gate electrode on the conductive channel, which is between source and drain electrodes, is electrically separated from source and drain electrodes by oxide sidewalls.
2. A self-aligned gate based nano FET of claim 1, wherein the one dimension nano material is CNT.
3. A self-aligned gate based nano FET of claim 1, wherein the thickness of source electrode or drain electrode is 50 to 80 nanometers, and those of gate dielectric and gate electrode are both 5 to 15 nanometers.
4. A self-aligned gate based nano FET of claim 1, gate dielectric is hafnium oxide, aluminum oxide, zirconium oxide or silicon oxide.
5. A self-aligned gate based nano FET of claim 1, gate electrode is metallic simple substance film.
6. A fabrication method of this self-aligned gate based nano FET, comprising:
1) Source and drain electrodes are deposit on the one dimension semiconductor nano material.
2) Gate electrode is patterned by lithography, wherein a part of source and drain electrodes should be covered by gate electrode.
3) Oxide layer are deposited by ALD as gate dielectric.
4) Gate electrode is grown by E-beam evaporation, thermal evaporation or magnetron sputtering. Total thickness of gate dielectric and gate electrode is less than source electrode or drain electrode.
5) Lift-off is carried out, and then gate electrode is fabricated
7. The method of claim 6, wherein the detail of step 1) is: firstly, source and drain electrodes are patterned on the one dimension semiconductor nano material; then, metal film is deposited as source electrode and drain electrode; at last, lift-off or etching is utilized to remove needless metals and source and drain electrodes are fabricated.
8. The method of claim 6, wherein in step 1) semiconductor nano material is CNT.
9. The method of claim 6, wherein in step 1) the thickness of source and drain electrodes is 50 to 80 nanometers; in step 3) the thickness of gate dielectric is 5 to 15 nanometers; in step 4) the thickness of gate electrode is 5 to 15 nanometers.
10. The method of claim 6, wherein in step 3) the oxide is hafnium oxide, aluminum oxide, zirconium oxide or silicon oxide; in step 4) conductive film is metallic simple substance film.