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%.

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%

scholarly journals Numerical Investigation of Graphene as a Back Surface Field Layer on the Performance of Cadmium Telluride Solar Cell

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3275
Author(s):  
Devendra KC ◽  
Deb Kumar Shah ◽  
M. Shaheer Akhtar ◽  
Mira Park ◽  
Chong Yeal Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Doping Concentration ◽  
Carrier Lifetime ◽  
Short Circuit ◽  
Back Surface ◽  
Back Surface Field ◽  
Cdte Solar Cell ◽  
Cdte Solar Cells ◽  
Surface Field

This paper numerically explores the possibility of ultrathin layering and high efficiency of graphene as a back surface field (BSF) based on a CdTe solar cell by Personal computer one-dimensional (PC1D) simulation. CdTe solar cells have been characterized and studied by varying the carrier lifetime, doping concentration, thickness, and bandgap of the graphene layer. With simulation results, the highest short-circuit current (Isc = 2.09 A), power conversion efficiency (h = 15%), and quantum efficiency (QE ~ 85%) were achieved at a carrier lifetime of 1 × 103 ms and a doping concentration of 1 × 1017 cm−3 of graphene as a BSF layer-based CdTe solar cell. The thickness of the graphene BSF layer (1 mm) was proven the ultrathin, optimal, and obtainable for the fabrication of high-performance CdTe solar cells, confirming the suitability of graphene material as a BSF. This simulation confirmed that a CdTe solar cell with the proposed graphene as the BSF layer might be highly efficient with optimized parameters for fabrication.

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.

scholarly journals Digital printing of a novel electrode for stable flexible organic solar cells with a power conversion efficiency of 8.5%

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
S. Wageh ◽  
Mahfoudh Raïssi ◽  
Thomas Berthelot ◽  
Matthieu Laurent ◽  
Didier Rousseau ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Solution Processed ◽  
Transparent Conducting

AbstractPoly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) mixed with single-wall nanotubes (SWNTs) (10:1) and doped with (0.1 M) perchloric acid (HClO4) in a solution-processed film, working as an excellent thin transparent conducting film (TCF) in organic solar cells, was investigated. This new electrode structure can be an outstanding substitute for conventional indium tin oxide (ITO) for applications in flexible solar cells due to the potential of attaining high transparency with enhanced conductivity, good flexibility, and good durability via a low-cost process over a large area. In addition, solution-processed vanadium oxide (VOx) doped with a small amount of PEDOT-PSS(PH1000) can be applied as a hole transport layer (HTL) for achieving high efficiency and stability. From these viewpoints, we investigate the benefit of using printed SWNTs-PEDOT-PSS doped with HClO4 as a transparent conducting electrode in a flexible organic solar cell. Additionally, we applied a VOx-PEDOT-PSS thin film as a hole transporting layer and a blend of PTB7 (polythieno[3,4-b] thiophene/benzodithiophene): PC71BM (phenyl-C71-butyric acid methyl ester) as an active layer in devices. Zinc oxide (ZnO) nanoparticles were applied as an electron transport layer and Ag was used as the top electrode. The proposed solar cell structure showed an enhancement in short-circuit current, power conversion efficiency, and stability relative to a conventional cell based on ITO. This result suggests a great carrier injection throughout the interfacial layer, high conductivity and transparency, as well as firm adherence for the new electrode.

Screen-printed n-type Si solar cells with laser-doped selective back surface field

Solar Energy ◽  
2021 ◽  
Vol 220 ◽  
pp. 211-216
Author(s):  
H.P. Yin ◽  
W.S. Tang ◽  
J.B. Zhang ◽  
W. Shan ◽  
X.M. Huang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Back Surface ◽  
Back Surface Field ◽  
Si Solar Cells ◽  
Surface Field ◽  
Screen Printed

Effects of buffer layer and back-surface field on MBE-grown InGaAsP/InGaAs solar cells

2016 ◽  
Vol 55 (2) ◽  
pp. 022301 ◽  
Author(s):  
Yuanyuan Wu ◽  
Lian Ji ◽  
Pai Dai ◽  
Ming Tan ◽  
Shulong Lu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Buffer Layer ◽  
Back Surface ◽  
Back Surface Field ◽  
Surface Field

Back surface field and vertical solar cell

1982 ◽  
Vol 53 (4) ◽  
pp. 3333-3334 ◽  
Author(s):  
Yu‐Tung Yang
Keyword(s):  
Solar Cell ◽  
Back Surface ◽  
Back Surface Field ◽  
Surface Field
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