Opportunities for Increased Efficiency in Monochromatic Photovoltaic Light Conversion
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
We study efficiency loss mechanisms and the potential for improvement of a record-setting monochromatic photovoltaic device, which has demonstrated efficiency of 70% at 830 nm. We combine experimental and modeling-based estimates of losses due to reflection, transmission, thermalization, and series resistance into an extended detailed-balance model that further includes losses due to nonradiative recombination, quantified by an external radiative efficiency (ERE). From the device's efficiency, we estimate ERE ≥ 10%. The device efficiency could be improved by increased material quality, operation at a longer wavelength closer to the GaAs band gap, and increased light intensity. Each order of magnitude increase in incident light intensity or material ERE increases the efficiency by 4% absolute. Redesigning the device to operate at 850 nm reduces thermalization losses by 2% absolute. Overall device efficiency over 80% could be attained by combining these opportunities.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
Full frame distilled prediction
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)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it