Optimizing inverted pyramidal grating texture for maximum photoabsorption in thick to thin crystalline silicon photovoltaics
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Bibliographic record
Abstract
We use the wave optical approach to optimize the front surface inverted pyramidal grating texture on 2 to 400 μm thick crystalline silicon in order to derive the maximum photocurrent density from the cell. We identify a “one size fits all” front grating periodicity of 1000 nm for c-Si absorbing layer configured with a back surface reflector that maximizes the absorption of normally incident AM1.5g solar spectrum irrespective of the layer thickness. With the identification of such universal inverted pyramidal grating texture, a common texturing process can be developed for high-efficiency devices on thick to thin c-si. Furthermore, our studies show that the photocurrent decreases by 0.02 mA/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> with every nanometer increase in the width of the flat region (mesa) between inverted pyramids in the optimum texture. The decrease in photocurrent due to reflection from the mesas can be recovered with the addition of an antireflective coating of optimum thickness of 80 nm and refractive index ~ 2.1.
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Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
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