ArticleNature communications2025
Ultra-weak infrared light detection based on steep-slope phototransistors.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Dynamically tunable membrane metasurfaces for infrared spectroscopy and strong light-matter interactions.Light, science & applications · 2026Article
- High encoding-sensitivity vision sensor with complementary nonlinear neuromorphic computing.Nature communications · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
A photodetector's sensitivity is conventionally quantified by specific detectivity, which balances responsivity and noise. However, we reveal that the turn-on threshold power is fundamentally governed by photo-carrier injection rather than detectivity. In conventional phototransistors/diodes, incident light cannot generate photocurrent via thermionic injection until its intensity saturates the surface potential. To overcome this limit, we design a photo-tunneling transistor with a partially dual-gated black phosphorus channel. This device breaks the injection barrier, achieving a temperature-independent subthreshold swing of ~50 mV/dec up to 250 K and reducing the threshold power by over an order of magnitude. At 80 K, it detects mid-wave infrared light with a minimum power of ~35 pW, outperforming conventional phototransistors with higher detectivity by ~30-fold. Our work redefines the sensitivity criteria for photodetectors and highlights the potential of steep-slope transistors in low-power optoelectronics, offering a pathway to ultrasensitive infrared sensing and imaging technologies.
Identifiers
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.