Solution-processed infrared photovoltaic devices with >10% monochromatic internal quantum efficiency
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
Large-area, physically flexible, solution-cast photovoltaics are of urgent interest to realize low-cost solar cells. Polymer, polymer-fullerene, and polymer-nanocrystal photovoltaics absorb light only to wavelengths as long as 750 nm, with the exception of one recent report out to 1000 nm. Half of the sun’s power spectrum lies beyond 700 nm; one third beyond 1000 nm; and infrared emitters of growing interest in thermal photovoltaics emit predominantly in the 1–3μm range. We report herein a processible infrared photovoltaic device active beyond 1μm. Our best devices exhibit external quantum efficiencies exceeding 1% and estimated monochromatic internal quantum efficiencies greater than 10%. This represents an improvement by more than 1000 compared to the best previously reported processible >1μm infrared photovoltaics. We employ a novel device architecture in which the infrared-absorbing active layer is based purely on semiconductor nanoparticles with no semiconducting polymer matrix. The replacement of a polymer-quantum dot composite with a pure nanoparticle layer, combined with improvements in control of organic ligands passivating nanoparticle surfaces, facilitates improved electronic transport, enhancing carrier extraction prior to recombination.
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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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.002 |
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