Dear Researches,
Our research is focused on the optimization and development of semiconductor devices and especially solar cell structures based on copper oxide and titanium dioxide.
Thin-film heterojunctions are fabricated using the Modular Platform PREVAC by direct current reactive magnetron sputtering.
https://www.youtube.com/watch?v=-0Sn4UbiKaE&t=4s
We achieved only 0.24% efficient of our soalr cells. The best result is 1.64% [ M. Rokhmat et al. Performance Improvement of TiO2/CuO Solar Cell by Growing Copper Particle using Fix Current Electroplating Method, Procedia Engineering ]
Our result is published:
Performance improvement of TiO2/CuO by increasing oxygen flow rates and substrate temperature using DC reactive magnetron sputtering method, Optik - International Journal for Light and Electron 206, 2020, 164297, s. 1-8, DOI: 10.1016/j.ijleo.2020.164297.
How could we increase efficiency of solar cell structures based on copper oxide and titanium dioxide?
Dear Paulina,
welcome!
When you give an out line of the performance parameters of your solar cell, one could propose methods to enhance the this type of solar cells.
However according to my experience, the most important parameter that affects much the performance of the solar cells is the minority carrier lifetime in the absorber and in the interface between the TiO2 and CuO.
Then at first you have to measure the lifetime!
You can use the open circuit voltage decay method as in the papers:
Article A distributed SPICE-model of a solar cell
and the paper
Article A. Zekry and G. El-Dllal, “ effect of MS contact on the elec...
You can use also the complex impedance of the solar cell in darkness
to measure such minority carrier lifetime. This method is given in the first paper.
It is also impedance spectroscopy.
To see the origin of small lifetime you need to study the recombination mechanisms please follow the chapter:Chapter Solar cells and arrays: Principles, analysis and design
and the book:Book Electronic Devices
As the crystallographic defects are the major cause for too small minority lifetime one has to reduce such defects in the volume of the absorber and at the interface.
There is the method of saturating the open bods by hydrogenation.
So, you may win by hydrogenating the active materials.
Wish you more success Paulina!
Dear Abdelhalim abdelnaby Zekry,
thank you very much, I will present your answer to my research group. We will discuss. Grzegorz Wisz
Due to the lattice mismatch the conversion efficiency of the heterojunction is not so high and hence I suggest to use buffer layer
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