Revolutionizing light capture: a comprehensive review of back-contact perovskite solar cell architectures
Why this work is in the frame
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Bibliographic record
Abstract
Back-contact architectures are emerging as a transformative solution to overcome optical and structural limitations inherent to conventional sandwich-type perovskite solar cells (PSCs). While single-junction PSCs have reached certified power conversion efficiencies (PCEs) of up to 27.0 %, their reliance on transparent conductive oxides (TCOs) and front-contact layers introduces significant photon losses and design constraints. Interdigitated back-contact (IBC) and quasi-interdigitated back-contact (QIBC) geometries eliminate the need for front-side electrodes, enabling full-area top illumination, enhanced optical efficiency, improved mechanical flexibility, and simplified recycling. In this Review, we systematically examine the development of back-contact PSCs, focusing on the interplay between device architecture, charge carrier dynamics, and fabrication strategies. We compare state-of-the-art patterning methods, including nanoimprint lithography, microsphere templating, and electrodeposition, and summarize material systems employed for electron/hole transport and insulation. Recent experimental devices have achieved over 12 % PCE, and simulations predict efficiencies exceeding 29 %, highlighting the untapped potential of back-contact designs. We also discuss the critical challenges, such as short diffusion lengths, interfacial recombination, and fabrication scalability, and propose design guidelines to accelerate the path toward high-efficiency, manufacturable back-contact PSC technologies.
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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) | 0.001 | 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) | 0.001 | 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