Research of Solar Photoelectric Micro-Power Supply on Chip

2013 ◽  
Vol 302 ◽  
pp. 776-781
Author(s):  
Yong Tai He ◽  
Li Xian Xiao ◽  
Rui Ming Liu
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Power Supply ◽  
Wireless Sensor ◽  
Integration Scheme ◽  
Main Process ◽  
Integrated Devices ◽  
Micro Power ◽  
On Chip ◽  
Process Compatibility

In order to reduce volume of MEMS wireless sensor with solar photoelectric micro-power supply, the integration scheme of solar photoelectric micro-power supply on chip is proposed in the paper. The scheme is consisted of seven main process steps, and has higher process compatibility. The characteristics of the integrated devices of the solar photoelectric micro-power supply are analyzed by using the semiconductor theory. The results show the device characteristics meet the requirement of the solar photoelectric micro-power supply. Moreover, the technology improving conversion efficiency of solar cells on chip is proposed by use of the back surfaces field (BSF). The conversion efficiency of solar cells reached 13.4%

Research on Efficiency of Solar Cell Integrated with Energy Management Circuitry on Chip

2014 ◽  
Vol 667 ◽  
pp. 396-400
Author(s):  
Li Xian Xiao ◽  
Yong Tai He ◽  
Jin Hao Liu ◽  
Yue Hong Peng
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Energy Management ◽  
Conversion Efficiency ◽  
Power Supply ◽  
Back Surface ◽  
Simulation Tools ◽  
Surface Field ◽  
Micro Power ◽  
On Chip

In photoelectric micro-power supply integrated on chip, the conversion efficiency of solar cell was lower compared with canonical solar cell. In order to improve the conversion efficiency of the solar cell, three technologies (fabricating back surface field, fabricating surfaces texture and reflector) were adopted in integrated process of photoelectric micro-power supply on chip. The relevant theory of the three technologies was introduced. The optimum schedule of the photoelectric micro-power supply integrated on SOI wafer was proposed. The conversion efficiency of solar cells was analyzed by simulation tools (PC1D). The results prove the conversion efficiency of solar cells was improved from 9. 34% to 13.3%.

A High Efficiency Solar PV Micro-Power Supply Integrated with Wireless Sensor Nodes

2013 ◽  
Vol 401-403 ◽  
pp. 495-499 ◽  
Author(s):  
Yong Tai He ◽  
Li Xian Xiao
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
Power Supply ◽  
Sensor Nodes ◽  
Utilization Efficiency ◽  
Wireless Sensor ◽  
Solar Pv ◽  
Wireless Sensor Nodes ◽  
Micro Power ◽  
Cell Arrays

In the wireless sensor nodes integrated with the solar PV micro-power supply, the solar energy conversion efficiency and utilization efficiency directly determine working life and stability of the wireless sensor nodes. Thus, a novel solar PV micro-power supply is designed which four solar cell arrays with same open voltage are designed and they are placed in top and three sides of the wireless sensor nodes. Simultaneous, the optimal voltage control technology is used to control work voltage of four solar cell arrays in the design. In addition, the prototype of wireless sensor node integrated with the solar PV micro-power supply is done. Moreover, the working characteristics of the prototype are tested in natural condition. The working voltages of four solar cell arrays are controlled in range of optimal voltage, and the solar cell arrays have high conversion efficiency. The output energy of system is increased about 50% by adding side solar cell arrays.

On-Chip Hybrid Power Supply System for Wireless Sensor Nodes

2014 ◽  
Vol 10 (3) ◽  
pp. 1-22
Author(s):  
Wulong Liu ◽  
Yu Wang ◽  
Yuchun Ma ◽  
Yuan Xie ◽  
Huazhong Yang
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Wireless Sensor Nodes ◽  
Hybrid Power ◽  
On Chip

Design of Micro Power Self-Generation Device

2013 ◽  
Vol 423-426 ◽  
pp. 2108-2111
Author(s):  
Shu Tang ◽  
Kai Xue Yang ◽  
Wang Fang ◽  
Biao Cai
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Power Supply ◽  
Piezoelectric Materials ◽  
Mechanical Vibration ◽  
Wireless Sensor ◽  
Vibration Absorber ◽  
Network Node ◽  
Micro Power

Power supply for micro-system such as wireless sensor network node (WSNN) is an open and interest issue. In this paper, the principle of power self-generation device based on mechanical vibration transformation is introduced, which absorb the energy of mechanical vibration and transform to pressure on piezoelectric materials to produce micro-current, and a mechanical frequency-adjustable vibration absorber based micro electricity self-generation device is designed.

Design of an Energy Harvesting Rectenna for Low-Power Wireless Sensor

2014 ◽  
Vol 687-691 ◽  
pp. 3391-3394
Author(s):  
Lei Jun Xu ◽  
Chang Shuo Wang ◽  
Xue Bai
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Conversion Efficiency ◽  
Power Supply ◽  
Impedance Matching ◽  
Load Resistance ◽  
Input Power ◽  
Wireless Sensor ◽  
Measurement Results ◽  
Energy Harvesting System

This paper presents the design of a compact 2.45 GHz microstrip rectenna for wireless sensors’ power supply. In energy harvesting system, the ambient RF energy can be collected by the rectenna and converted to direct current, therefore, it can be applied to the power supply of low-power wireless sensor. Voltage doubling rectifier circuit and T-type microstrip impedance matching network are applied to this rectenna to increase the output voltage and the rectification efficiency. The antenna is fabricatied ​​by using double PCB board (FR4), and it is optimized by ADS to achieve the best performance. The measurement results show that the rectifier can reach the highest conversion efficiency of 78% when the load resistance is 320 Ω and the input power is 18 dBm. It also greatly improves rectenna’s conversion efficiency at lower input power when the input power is-20 dBm, which has great practical value for supplying low power consumption sensors.

A thiourea additive-based quadruple cation lead halide perovskite with an ultra-large grain size for efficient perovskite solar cells

Nanoscale ◽  
2019 ◽  
Vol 11 (45) ◽  
pp. 21824-21833 ◽  
Author(s):  
Jyoti V. Patil ◽  
Sawanta S. Mali ◽  
Chang Kook Hong
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Halide Perovskite ◽  
Lead Halide

Controlling the grain size of the organic–inorganic perovskite thin films using thiourea additives now crossing 2 μm size with >20% power conversion efficiency.

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