Details

Autor(en) / Beteiligte

• Jiang, Bing‐Huang
• Lin, Di‐Wen
• Shiu, Ming‐Neng
• Su, Yu‐Wei
• Tsai, Tsung‐Han
• Tsai, Pei‐Hsun
• Shieh, Tien‐Shou
• Chan, Choon Kit
• Lu, Jong‐Hong
• Chen, Chih‐Ping

Titel

Efficient, Ambient‐Stable, All‐Polymer Organic Photodetector for Machine Learning‐Promoted Intelligent Monitoring of Indoor Plant Growth

Ist Teil von

• Advanced optical materials, 2023-08, Vol.11 (15), p.n/a

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2023

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• The blend ratio and thickness of the PM6:PY‐IT active layer are optimized to realize highly efficient all‐polymer organic photodetectors (OPDs). Ultralow dark current densities of less than 5.92 × 10−10 A cm−2 (at −1 V) appear when the PM6:PY‐IT active layers have thicknesses in the range of 250–400 nm and blend ratios between 1:1 and 1:1.4, suggesting a wide fabrication window. Fast rise/fall times of 560/250 ns are measured with a cut‐off frequency of 530 kHz for the OPD incorporating a 250‐nm‐thick 1:1 blend. This OPD provides superior performance, with a high detectivity of 2.98 × 1013 Jones and a wide linear dynamic range of 138 dB (at 530 nm (−1 V)). In addition, the ultralow dark current of the OPD retains excellent long‐term stability over 500 h of aging testing (thermal stress, ambient conditions, and continuous illumination). With the integration of specific light filters, a system is realized for the efficient detection of indoor plant‐growth lighting, allowing the rapid and accurate detection (>97%) of photosynthetic photon flux at various wavelengths of light that directly determine the photosynthesis and photomorphogenesis of indoor plants, supervised by machine learning. The artificial intelligence‐trained OPD effectively improves detection accuracy. An all‐polymer photodetector is demonstrated for machine learning‐promoted intelligent monitoring of indoor plant growth: an ultralow value of dark current (5.92 × 10−10 A cm−2), a high value of detectivity (2.98 × 1013 Jones, at 530 nm), and a wide linear dynamic range (138 dB) are measured at a reverse bias of −1 V.