Excess charge carrier injection densities in PERC solar cells at open-circuit voltage and maximum power point

2019 ◽  
Author(s):  
Maksym Tratnikov ◽  
Matthias Müller
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Excess Charge ◽  
Carrier Injection ◽  
Maximum Power Point ◽  
Charge Carrier Injection ◽  
Power Point ◽  
Excess Charge Carrier

scholarly journals Impact of charge carrier recombination and energy disorder on the open-circuit voltage of polymer solar cells

2020 ◽  
Vol 69 (4) ◽  
pp. 046101
Author(s):  
Qing-Zhong Zhou ◽  
Feng Guo ◽  
Ming-Rui Zhang ◽  
Qing-Liang You ◽  
Biao Xiao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Carrier Recombination ◽  
Energy Disorder ◽  
Charge Carrier Recombination

scholarly journals Improved Fractional Open Circuit Voltage MPPT Methods for PV Systems

Electronics ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 321 ◽  
Author(s):  
Dmitry Baimel ◽  
Saad Tapuchi ◽  
Yoash Levron ◽  
Juri Belikov
Keyword(s):  
Open Circuit Voltage ◽  
Open Circuit ◽  
Maximum Power ◽  
Pv System ◽  
Maximum Power Point ◽  
Pv Systems ◽  
Point Tracking ◽  
Pv Panel ◽  
Power Point Tracking ◽  
Power Point

This paper proposes two new Maximum Power Point Tracking (MPPT) methods which improve the conventional Fractional Open Circuit Voltage (FOCV) method. The main novelty is a switched semi-pilot cell that is used for measuring the open-circuit voltage. In the first method this voltage is measured on the semi-pilot cell located at the edge of PV panel. During the measurement the semi-pilot cell is disconnected from the panel by a pair of transistors, and bypassed by a diode. In the second Semi-Pilot Panel method the open circuit voltage is measured on a pilot panel in a large PV system. The proposed methods are validated using simulations and experiments. It is shown that both methods can accurately estimate the maximum power point voltage, and hence improve the system efficiency.

Sensitization and Charge Carrier Kinetics in ZnO Powders

1988 ◽  
Vol 43 (3) ◽  
pp. 189-192 ◽  
Author(s):  
Karl-Michael Schindler ◽  
Marinus Kunst
Keyword(s):  
Charge Carrier ◽  
Time Range ◽  
Excess Charge ◽  
Carrier Injection ◽  
Charge Carrier Dynamics ◽  
Transient Photoconductivity ◽  
Photoconductivity Decay ◽  
Zno Powders ◽  
Zno Powder ◽  
Excess Charge Carrier

Abstract The influence of the excess charge carrier injection mechanism on the excess charge carrier dynamics in ZnO powder is investigated by contactless transient photoconductivity measurements. Excess charge carriers were produced by above bandgap light, subbandgap light and by injection from an adsorbed dye (Rhodamine B) after excitation of this dye. In all these cases the transient photoconductivity decay extends over a large time range but only after band-to-band excitation an appreciable decay is observed in the microsecond time range. The experimental results are discussed in particular with respect to photocatalysis.

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