Photomultiplication-Type All-Polymer Photodetectors with a Signal-to-Noise Ratio over 118,800 DOI
Haolan Zhang,

Xingchao Zhao,

R.H. Gong

et al.

ACS Applied Electronic Materials, Journal Year: 2024, Volume and Issue: 6(11), P. 8481 - 8487

Published: Oct. 29, 2024

Photomultiplication (PM) type all-polymer photodetectors (PM-APPDs) were fabricated by using polymer donor P3HT and acceptor PY-IT as the photoactive layers. An optimal weight ratio of to is approximately 100:4 achieve an efficient hole transport channel numerous isolated electron traps formed P3HT/PY-IT/P3HT. These active layers exhibit hole-only characteristics, resulting in a low dark-current density (JD) PM-APPDs. And JD PM-APPDs can be further suppressed employing triphenylamine-based cationic conjugated polyelectrolyte, TPAFA-7Br, layer (HTL) instead PEDOT:PSS layer. The with TPAFA-7Br HTL display rather 1.8 × 10–9 A·cm–2 under −10 V bias, which significantly lower than 2.1 10–6 for same bias. Additionally, external quantum efficiency (EQE) 1760% specific detectivity (D*shot) 0.9 1014 Jones at 630 nm 0.6 mW·cm–2 white light illumination. linear dynamic range 122 dB, exhibiting significant improvement compared 106 dB HTL. signal-to-noise optimized reaches 118,800 bias illumination, should among best values organic without additional current amplifier.

Language: Английский

Recent Developments in Organic Photodetectors for Future Industrial Applications: A Review DOI

J. Ajayan,

S. Sreejith,

Ajith Ravindran

et al.

Sensors and Actuators A Physical, Journal Year: 2025, Volume and Issue: unknown, P. 116459 - 116459

Published: March 1, 2025

Language: Английский

Citations

2
Light‐Mediated Photomultiplication via Cascade Energy Transfer in Organic Photodiode DOI Creative Commons
Gae Hwang Lee, Jae Hyun Kim, Hyunbum Kang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Abstract Photomultiplication organic photodetectors (PM‐OPDs) demonstrate exceptional sensitivity in low‐light environments, making them valuable for imaging, environmental monitoring, and wearable health sensors. However, traditional PM‐OPDs require significantly high operational voltages, which lead to elevated dark current degraded noise performance. To address these limitations, a novel light‐mediated PM‐OPD is introduced that enhances signal gain through cycle of light emission reabsorption within the photoactive layers. This design integrates absorption layers, achieving an external quantum efficiency exceeding 200% while maintaining low (≈10 −9 A cm −2 ) specific detectivity over 5.0 × 10 13 Jones. By reabsorbing internally generated drive photomultiplication, device enables efficient amplification without penalties. It achieves 29.5 dB photoplethysmography detection at lux demonstrates scalability cost‐effective production using thermal evaporation, it promising solution low‐power, high‐sensitivity

Language: Английский

Citations

0
High performance of self-powered Ga2O3:Si/p-GaN heterojunction UV photodetectors DOI
Thi Kim Oanh Vu,

Hai Bui Van,

Nguyen Xuan Tu

et al.

Materials Science in Semiconductor Processing, Journal Year: 2025, Volume and Issue: 193, P. 109479 - 109479

Published: March 22, 2025

Language: Английский

Citations

0
Photomultiplication-Type All-Polymer Photodetectors with a Signal-to-Noise Ratio over 118,800 DOI
Haolan Zhang,

Xingchao Zhao,

R.H. Gong

et al.

ACS Applied Electronic Materials, Journal Year: 2024, Volume and Issue: 6(11), P. 8481 - 8487

Published: Oct. 29, 2024

Photomultiplication (PM) type all-polymer photodetectors (PM-APPDs) were fabricated by using polymer donor P3HT and acceptor PY-IT as the photoactive layers. An optimal weight ratio of to is approximately 100:4 achieve an efficient hole transport channel numerous isolated electron traps formed P3HT/PY-IT/P3HT. These active layers exhibit hole-only characteristics, resulting in a low dark-current density (JD) PM-APPDs. And JD PM-APPDs can be further suppressed employing triphenylamine-based cationic conjugated polyelectrolyte, TPAFA-7Br, layer (HTL) instead PEDOT:PSS layer. The with TPAFA-7Br HTL display rather 1.8 × 10–9 A·cm–2 under −10 V bias, which significantly lower than 2.1 10–6 for same bias. Additionally, external quantum efficiency (EQE) 1760% specific detectivity (D*shot) 0.9 1014 Jones at 630 nm 0.6 mW·cm–2 white light illumination. linear dynamic range 122 dB, exhibiting significant improvement compared 106 dB HTL. signal-to-noise optimized reaches 118,800 bias illumination, should among best values organic without additional current amplifier.

Language: Английский

Citations

2