Perovskite solar cells (PSCs) are considered the most promising photovoltaic devices to replace silicon-based solar cells because of their low preparation cost and high photoelectric conversion efficiency (PCE). Reducing defects in perovskite films is an effective means to improve the efficiency of PSCs. In this paper, a lead chelator was selected and mixed into hole transport layers (HTLs) to design and prepare mesoporous PSCs with the structure of ITO/PTAA(BCP)/AlO/PVK/PCBM/BCP/Ag, and its modification effect on the buried interface at the bottom of the perovskite layer in the mesoporous structure was explored.
View Article and Find Full Text PDFEmploying a photosensitive donor/acceptor planar heterojunction (DA-PHJ) with complementary optical absorption as the active layer is one of the key strategies for realizing broad spectral organic photodiodes (BS-OPDs). To achieve superior optoelectronic performance, it is vital to optimize the thickness ratio of the donor layer to acceptor layer (the DA thickness ratio) in addition to the optoelectronic properties of the DA-PHJ materials. In this study, we realized a BS-OPD exploiting tin(II) phthalocyanine (SnPc)/3,4,9,10-perylenete-acarboxylic dianhydride (PTCDA) as the active layer and investigated the effect of the DA thickness ratio on the device performance.
View Article and Find Full Text PDFAtomic layer deposition (ALD) turns out to be particularly attractive technology for the sputtering buffer layer when preparing the semi-transparent (ST) perovskite solar cells (PSCs) and the tandem solar cells. ALD process turns to be island growth when the substrate is unreactive with the ALD reactants, resulting in the pin-hole layer, which causes an adverse effect on anti-sputtering. Here, p-i-n structured PSCs with ALD SnO as sputtering buffer layer are conducted.
View Article and Find Full Text PDFWideochir Inne Tech Maloinwazyjne
September 2021
Introduction: The clinical evidence on dexmedetomidine (DEX) for postoperative pain scores and opioid consumption remains unclear in laparoscopic cholecystectomy (LC).
Aim: To evaluate whether DEX could reduce opioid consumption and pain control after LC.
Material And Methods: A meta-analysis search of EMBASE, PubMed and Cochrane CENTRAL databases was performed and randomized controlled trials (RCTs) comparing DEX with control for adult patients undergoing LC were searched.
Objective: There were COVID-19 patients with SARS-COV-2 nucleic acid long-term positive. This article aims to understand the relevant factors that affect SARS-COV-2 clearance time.
Methods: The clinical data of 115 COVID-19 patients with SARS-COV-2 nucleic acid positive time exceeding 14 days were collected retrospectively, and the relationship between clinical characteristics, chest CT scans, blood cells, biochemical indicators, and the time of viral nucleic acid turning negative were analyzed.
Background: Dexmedetomidine has been shown to have antiarrhythmic effects by exhibiting sympatholytic properties and activating the vagus nerve in preclinical studies. Results from clinical trials of dexmedetomidine on atrial fibrillation (AF) following adult cardiac surgery are controversial.
Materials And Methods: We searched EMBASE, PubMed and Cochrane CENTRAL databases for randomized controlled trials (RCTs) comparing the antiarrhythmic effect of dexmedetomidine versus placebo or other anesthetic drugs in adult patients undergoing cardiac surgery.
Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
August 2019
Objective: To establish septic myocardial inhibition rat model by echocardiography.
Methods: Twenty adult male Sprague-Dawley (SD) rats were divided into control group and model group according to the random number table method, with 10 rats in each group. The rat model of septic myocardial inhibition was reproduced by intraperitoneal injection of 10 mg/kg lipopolysaccharide, while the control group was given the same volume of saline.
Pentacene is a small molecule organic semiconductor and has high absorption in the UV and visible region. In this work, we report the channel-length-dependent performance of bottom-gate top-contact photosensitive organic field-effect transistors based on pentacene with different channel lengths ranging from 25 to 150 μm. The results show that, for a given drain voltage, the photoresponsivity, external quantum efficiency, and specific detectivity decrease with increasing channel length.
View Article and Find Full Text PDFSepsis with severe systemic inflammation remains a great challenge for the intensive care unit in clinics. Although biomarkers have been identified to diagnose, monitor and predict these syndromes, novel therapeutic approaches are required for the amelioration of symptoms of sepsis and septic shock. The present study demonstrated that interleukin (IL)-31 was able reduce the mortality rate of lipopolysaccharide (LPS)-induced sepsis with the reduction of inflammatory cytokines in the sera.
View Article and Find Full Text PDFBackground: Dexmedetomidine has been shown to confer direct renoprotection by stabilizing the sympathetic system, exerting anti-inflammatory effects and attenuating ischemia/reperfusion (I/R) injury in preclinical studies. Results from clinical trials of dexmedetomidine on acute kidney injury (AKI) following adult cardiac surgery are controversial.
Methods: We searched EMBASE, PubMed, and Cochrane CENTRAL databases for randomized controlled trials (RCTs) comparing the renal effect of dexmedetomidine versus placebo or other anesthetic drugs in adult patients undergoing cardiac surgery.
Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
December 2014
Zhongguo Wei Zhong Bing Ji Jiu Yi Xue
January 2012
Objective: To investigate the clinical efficacy and value of intra-aortic balloon pump (IABP) with vasoactive drugs for septic shock patients.
Methods: A method of single-centre registry was conducted. Data were collected from 78 consecutive septic shock patients in late stage in intensive care unit (ICU) of Beijing Shijitan Hospital diagnosed between July 2006 and October 2010.