From multijunction, I mean more than four stacked-layer i.e. three or more junctions.
Jatin: Best regards. A systematic answer or guidance to your question cannot be distinctively given as the most relevant answer would be from a solar cell textbook where band gap diagram plot or band diagram plot of multi junction solar cells are provided by the author. After prolonged survey from the internet, I identified three papers that are relevant to your need. The first two papers attached here are most relevant to your question and the third one attached discusses some molar fraction based band gap derivation and you should check how conduction band and valence band spatial profiling are done here. Also check the references in these three articles. Sometimes references can lead you to review papers or text books which if you can download, can guide you to your needed solution or analysis.
If the supplied resources are useful, I would request you to recommend my answer.
Sincerely,
Dr. Nabil Shovon Ashraf
Associate Professor
SAC 932
Department of ECE
North South University
Dhaka, Bangladesh.
Jatin: You may also look into the following web links for addressing the solution to your questions:
(1) https://www.wikiwand.com/en/Multi-junction_solar_cell
(2) https://slideplayer.com/slide/11639434/
The third item is a paper that is very relevant to your question and if I followed your question correctly, this paper provides the most substantive answer to your question.
By these two answers I tried to give you the most appropriate information to your question. Please recommend my answer if these answers are useful.
Sincerely,
Dr. Nabil Shovon Ashraf
Associate Professor
SAC 932
Department of ECE
North South University
Dhaka, Bangladesh.
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