The down-to-earth future of Si substrate multi-junction concentrator photovoltaics
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
The high costs of multi-junction (MJ) cells are a barrier to transferring MJ technology from space to terrestrial Concentrator Photovoltaic (CPV) markets. This may be addressed with significant impact by transitioning from Ge to Si substrates. By exploiting reduced material costs, new manufacturing practices including automation and revised quality standards, and by leveraging manufacturing efficiencies inherent to larger wafer sizes, up to 200 mm, the selection of Si as the substrate material allows for reductions potentially as large as 70% of current values. It is possible to demonstrate how plausible reductions to system costs (22 - 40%), in combination with very conservative cell cost reductions, make achieving competitive Cost of Electricity (COE) values in the order of $0.10/kWh a likely scenario in the near future for MJ CPV. Impending increases to conversion efficiencies (up to 50%), exploited conjointly with stated cost reduction factors (particularly system cost reduction), promise to drive COE values lower still, potentially under $0.08/kWh.
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