The current-voltage characteristics of organic heterojunctions (HJs) are often modeled using the generalized Shockley equation derived for inorganic diodes. However, since this description does not rigorously apply to organic semiconductor donor-acceptor (D-A) HJs, the extracted parameters lack a clear physical meaning. Here, we derive the current density-voltage (J-V) characteristic specifically for D-A HJ solar cells and show that it predicts the general dependence of dark current, open-circuit voltage (Voc), and short-circuit current (Jsc) on temperature and light intensity as well as the maximum Voc for a given D-A material pair....
This is the beginning of the abstract for a recent PRB paper from Stephen Forrest and collaborators, that I want to understand. I certainly agree with the first two sentences!
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A golden age for precision experimental cosmology
Yin-Zhe Ma gave a nice physics colloquium at UQ last week, A Golden Age for Cosmology I learnt a lot. Too often, colloquia are too speciali...
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This week Nobel Prizes will be announced. I have not done predictions since 2020 . This is a fun exercise. It is also good to reflect on w... -
Is it something to do with breakdown of the Born-Oppenheimer approximation? In molecular spectroscopy you occasionally hear this term thro... -
Nitrogen fluoride (NF) seems like a very simple molecule and you would think it would very well understood, particularly as it is small enou...
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