as PM6 [13,14] and PBDB-T [15] with narrow bandgap nonfullerene acceptors (A), for example, IT-4F, [14] and Y6 [8] has remained as a wise strategy to absorb solar irradiation in the range of 500-900 nm or even up to a broader absorption region. However, solar irradiation in the spectrum range of 300-500 nm remains unabsorbed. The construction of ternary device by introducing a third component into the photoactive layer has been proven to overcome this issue effectively, where full utilization of solar irradiation in the entire solar spectrum can be realized without complicating the traditional fabrication processes. [16][17][18][19][20][21][22][23] Fullerene derivatives like phenyl-C71-butyric-acid-methyl ester (PC 71 BM) with the main absorption in the range of 300-500 nm have been commonly used as a third component to strengthen the light-harvesting capability of active layers, thus providing a potential route to enhance the short-circuit current density (J sc ) and PCE. [24] Some recent theoretical models and mechanisms have been proposed to provide guide and reference for future development of ternary devices. [25][26][27] Among them, three models which include charge transfer model, [17] energy transfer model, [28] and parallel-like or alloy-like model [16,29] have been widely accepted. In the charge transfer model, the third component in the active layer participates in the process of exciton dissociation and charge carrier generation in the donor/ acceptor interface. [22,30] A cascaded energy level distribution is the requirement for such mechanisms to take place. [31] In contrast, in the energy transfer model, the third component serves as an "energy donor" which absorbs additional solar energy and delivers it to donor or acceptor by Förster or Dexter energy transfer. [32] Ternary devices based on charge transfer or energy transfer mechanisms improve J sc by utilizing additional solar energy. [33,34] Ternary devices based on charge transfer mechanism will affect the open-circuit voltage (V oc ) while the devices based on energy transfer mechanism can hardly impact the V oc due to their roles in charge transfer and dissociation. [35] The third one is the parallel-like or alloy-like model, of which the mechanism does not require any certain energy levels.In parallel-like model, the third component serves as a donor (or acceptor) and work independently with another donor (or acceptor). [36] The ternary device can be viewed as two subcells that are mixed together. For the alloy-like model, the third component is finely mixed with one of the host components to form a two-phase morphology. In this process, dual donors Ternary heterojunction strategies appear to be an efficient approach to improve the efficiency of organic solar cells (OSCs) through harvesting more sunlight. Ternary OSCs are fabricated by employing wide bandgap polymer donor (PM6), narrow bandgap nonfullerene acceptor (Y6), and PC 71 BM as the third component to tune the light absorption and morphologies of the blend films. A record power conver...

Carbapenem-resistant (CRE) infection is highly endemic in China, but estimates of the infection burden are lacking. We established the incidence of CRE infection from a multicenter study that covered 25 tertiary hospitals in 14 provinces. CRE cases defined as carbapenem-nonsusceptible, ,, or infections during January to December 2015 were collected and reviewed from medical records. Antimicrobial susceptibility testing and carbapenemase gene identification were performed. Among 664 CRE cases, most were caused by (73.9%), followed by (16.6%) and (7.1%). The overall CRE infection incidence per 10,000 discharges was 4.0 and differed significantly by region, with the highest in Jiangsu (14.97) and the lowest in Qinghai (0.34). Underlying comorbidities were found in 83.8% of patients; the median patient age was 62 years (range, 45 to 74 years), and 450 (67.8%) patients were male. Lower respiratory tract infections (65.4%) were the most common, followed by urinary tract infection (16.6%), intra-abdominal infection (7.7%), and bacteremia (7.7%). The overall hospital mortality rate was 33.5%. All isolates showed nonsusceptibility to carbapenems and cephalosporins. The susceptibility rate of polymyxin B was >90%. Tigecycline demonstrated a higher susceptibility rate against than against (90.9% versus 40.2%). Of 155 clinical isolates analyzed, 89% produced carbapenemases, with a majority of isolates producing KPC (50%) or NDM (33.5%)-type beta-lactamases among and The incidence of CRE infection in China was 4.0 per 10,000 discharges. The patient-based disease burden in tertiary hospitals in China is severe, suggesting an urgent need to enhance infection control.

Due to the barrierless free charge generation, low charge trapping, and high charge mobilities, the PM6:Y6 organic solar cell (OSC) achieves excellent power conversion efficiency (PCE) of 15.7%. However, the...