In this paper, we investigate the temperature sensitivity of gain and breakdown voltage of detectors based on cycling excitation process (CEP), an internal signal amplification mechanism found in amorphous silicon (a-Si). Changes in gain and breakdown voltage with temperature can result in pixel-to-pixel signal variation in a focal plane array and variations in photon detection efficiency for single photon detectors. We have demonstrated athermalized CEP detectors with their gain and breakdown voltage being nearly temperature independent from 200 K to 350 K, covering the temperature range for practical applications. The device appears to be more thermally stable than avalanche photodetectors (APDs) with different gain media such as Si, InP, InAlAs, etc. The excellent thermal stability of CEP detectors is attributed to the field-enhanced tunneling process for excitation of localized carriers into the mobile bands, which dominates over the phonon excitation process.

Download full-text PDF

Source
http://dx.doi.org/10.1364/OE.456563DOI Listing

Publication Analysis

Top Keywords

gain breakdown
12
breakdown voltage
12
amorphous silicon
8
excitation process
8
voltage temperature
8
cep detectors
8
detectors
5
gain
5
athermalized carrier
4
carrier multiplication
4

Similar Publications

Consumption of oleogel alleviates lipid metabolism disorders in high-fat diet-fed rats by inhibiting LPS-induced gut microbiota-mediated inflammation.

Food Funct

January 2025

Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, P.R. China.

This study investigated the effect of oleogel consumption on lipid metabolism, gut microbiota and low-grade inflammation in rats fed with a high-fat diet. Male SD rats received either a control diet or high-fat diets for six weeks. The high-fat diets included a regular high-fat diet and high-fat diets in which lard was replaced with pure sunflower oil, un-gelled sunflower oil containing a dispersed gelator, or gelled sunflower oil with the gelator (oleogel).

View Article and Find Full Text PDF

Rheumatoid arthritis (RA) is a systemic, chronic inflammatory disease characterized by altered levels of inflammatory cytokines. One of the key cytokines involved in the pathogenesis of RA is tumor necrosis factor α (TNF-α), which plays a crucial role in the differentiation of T cells and B cells and serves as a primary trigger of inflammation and joint damage in RA. Human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) have shown potential in alleviating the symptoms of RA.

View Article and Find Full Text PDF

Macrophage infiltration and activation is a key factor in the progression of diabetic nephropathy (DN). However, aerobic glycolysis induced by m6A methylation modification plays a key role in M1-type activation of macrophages, but the specific mechanism remains unclear in DN. In this study, the expression of m6A demethylase Fto in bone marrow derived macrophages and primary kidney macrophages from db/db mice.

View Article and Find Full Text PDF

Nonalcoholic fatty liver disease (NAFLD) is considered one of the most common metabolic disorders worldwide. Although the pathoetiology of NAFLD is not fully elucidated, recent evidence suggests the involvement of stress, inflammation, and programmed death in the onset and progression of the disease. This investigation aimed to evaluate the effects of ellagic acid (EA), a known herbal antioxidant, on a high-fat diet (HFD)-induced animal model of NAFLD by evaluating the status of lipid profile, necroptosis (RIPK1, RIPK3, and MLKL), autophagy (LC3, ATG5, and BECN1), inflammation (TNF-α, IL-6, IL-4, and IL-10), and stress (SOD, CAT, GR, GPx, and MDA).

View Article and Find Full Text PDF

Aims/introduction: Metformin treatment for hyperglycemia in pregnancy (HIP) beneficially improves maternal glucose metabolism and reduces perinatal complications. However, metformin could impede pancreatic β cell development via impaired mitochondrial function. A new anti-diabetes drug imeglimin, developed based on metformin, improves mitochondrial function.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!