scholarly journals Organic Photodetectors and their Application in Large Area and Flexible Image Sensors: The Role of Dark Current

2019 ◽  
Vol 30 (20) ◽  
pp. 1904205 ◽  
Author(s):  
Giulio Simone ◽  
Matthew J. Dyson ◽  
Stefan C. J. Meskers ◽  
René A. J. Janssen ◽  
Gerwin H. Gelinck
Keyword(s):  
Dark Current ◽  
Image Sensors ◽  
Large Area ◽  
Organic Photodetectors

scholarly journals CMOS Image Sensors and Plasma Processes: How PMD Nitride Charging Acts on the Dark Current

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5534
Author(s):  
Yolène Sacchettini ◽  
Jean-Pierre Carrère ◽  
Romain Duru ◽  
Jean-Pierre Oddou ◽  
Vincent Goiffon ◽  
...  
Keyword(s):  
Dark Current ◽  
Uv Light ◽  
Degradation Mechanism ◽  
Nitride Layer ◽  
Image Sensors ◽  
Electron Hole ◽  
Cmos Image Sensors ◽  
Depth Analysis

Plasma processes are known to be prone to inducing damage by charging effects. For CMOS image sensors, this can lead to dark current degradation both in value and uniformity. An in-depth analysis, motivated by the different degrading behavior of two different plasma processes, has been performed in order to determine the degradation mechanisms associated with one plasma process. It is based on in situ plasma-induced charge characterization techniques for various dielectric stack structures (dielectric nature and stack configuration). A degradation mechanism is proposed, highlighting the role of ultraviolet (UV) light from the plasma in creating an electron hole which induces positive charges in the nitride layer at the wafer center, and negative ones at the edge. The trapped charges de-passivate the SiO2/Si interface by inducing a depleted interface above the photodiode, thus emphasizing the generation of dark current. A good correlation between the spatial distribution of the total charges and the value of dark current has been observed.

scholarly journals Carrier Blocking Layer Materials and Application in Organic Photodetectors

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1404
Author(s):  
Yi Li ◽  
Hu Chen ◽  
Jianhua Zhang
Keyword(s):  
High Performance ◽  
Spectral Response ◽  
Critical Role ◽  
Cost Effective ◽  
Image Sensors ◽  
Large Area ◽  
Solution Processes ◽  
Response Range ◽  
Long Time ◽  
Organic Photodetectors

As a promising candidate for next-generation photodetectors, organic photodetectors (OPDs) have gained increasing interest as they offer cost-effective fabrication methods using solution processes and a tunable spectral response range, making them particularly attractive for large area image sensors on lightweight flexible substrates. Carrier blocking layers engineering is very important to the high performance of OPDs that can select a certain charge carriers (holes or electrons) to be collected and suppress another carrier. Carrier blocking layers of OPDs play a critical role in reducing dark current, boosting their efficiency and long-time stability. This Review summarizes various materials for carrier blocking layers and some of the latest progress in OPDs. This provides the reader with guidelines to improve the OPD performance via carrier blocking layers engineering.

Role of interfaces in controlling charge accumulation and injection in the photodetection performance of photomultiplication-type organic photodetectors

2020 ◽  
Vol 8 (26) ◽  
pp. 9024-9031 ◽  
Author(s):  
Dechao Guo ◽  
Dezhi Yang ◽  
Jingcheng Zhao ◽  
Agafonov Vadim ◽  
Dongge Ma
Keyword(s):  
Dark Current ◽  
High Performance ◽  
Charge Accumulation ◽  
Organic Photodetectors

High performance PM-OPDs were achieved by strategically decreasing the dark current and regulating the interfaces to control charge accumulation and injection.

Strong dark current suppression in flexible organic photodetectors by carbon nanotube transparent electrodes

Nano Today ◽  
2021 ◽  
Vol 37 ◽  
pp. 101081
Author(s):  
Woongsik Jang ◽  
Byung Gi Kim ◽  
Seungju Seo ◽  
Ahmed Shawky ◽  
Min Soo Kim ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Dark Current ◽  
Transparent Electrodes ◽  
Organic Photodetectors

Readout improvement in large area a-SiC:H-based image sensors

2001 ◽  
Vol 184 (1-4) ◽  
pp. 408-412 ◽  
Author(s):  
M. Fernandes ◽  
Yu. Vygranenko ◽  
M. Vieira
Keyword(s):  
Image Sensors ◽  
Large Area

Spray-Coated Organic Photodetectors and Image Sensors with Silicon-Like Performance

2018 ◽  
Vol 4 (1) ◽  
pp. 1800158 ◽  
Author(s):  
Markus Biele ◽  
Cindy Montenegro Benavides ◽  
Judith Hürdler ◽  
Sandro F. Tedde ◽  
Christoph J. Brabec ◽  
...  
Keyword(s):  
Image Sensors ◽  
Organic Photodetectors

scholarly journals Footprints of triggering in large area surveys of the nearby ISM and YSOs

2006 ◽  
Vol 2 (S237) ◽  
pp. 124-127
Author(s):  
L. Viktor Tóth ◽  
Zoltán T. Kiss
Keyword(s):  
Star Formation ◽  
Stellar Evolution ◽  
Large Area ◽  
Large Sample ◽  
Low Mass ◽  
Cold Core

AbstractOur goal is to evaluate the role of triggering effects on the star formation and early stellar evolution by presenting a statistically large sample of cloud and low-mass YSO data. We conducted large area surveys (ranging from 400 square-degree to 10800 square-degree) in optical, NIR and FIR. The distribution of the ISM and low-mass YSOs were surveyed. A relative excess was found statistically in the number of dense and cold core bearing clouds and low mass YSOs in the direction of the FIR loop shells indicating a possible excess in their formation.

The role of metal/metal oxide/organic anode interfaces in efficiency and stability of bulk heterojunction organic photodetectors

2014 ◽  
Vol 117 ◽  
pp. 13-17 ◽  
Author(s):  
A. Soultati ◽  
D.G. Georgiadou ◽  
A. Douvas ◽  
P. Argitis ◽  
D. Alexandropoulos ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Bulk Heterojunction ◽  
Metal Metal ◽  
Organic Photodetectors

scholarly journals Trends in Adoption of Farm Technology: An Overview of Survey in Bhagalpur District of Bihar

2020 ◽  
pp. 56-62
Author(s):  
Shivam Kumar ◽  
S. R. Singh ◽  
Chaitali Kumari ◽  
Aabha .
Keyword(s):  
Rural Areas ◽  
Primary Source ◽  
Marketing Channel ◽  
Structured Interview ◽  
Large Area ◽  
New Techniques ◽  
New Crops ◽  
High Yielding Varieties ◽  
Weather Variations

Agriculture is the primary source of livelihood for rural areas in Bihar. Agriculture being mostly dependent on monsoon is highly affected by scanty rainfall, weather variations, flood, etc. The study was conducted in Bhagalpur district of Bihar to assess role of different technologies in enhancing income and mitigate challenges faced by farmers. Three villages of Sabour block in Bhagalpur district namely Farka, Ghospur and English were selected for study. A total of 150 farmers (50 from each village) were selected randomly and data was collected using semi-structured interview schedule. Production innovations like high yielding varieties, new techniques, and home-made remedies of costly designs were identified, along with a marketing channel to sell vegetables from diara region. Some new crops like strawberry and fruits plantation in large area seemed to have good scope; poultry business also appeared to be promising. Some constraints were also identified which when rectified can give new potentials to agricultural production in this area.

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