A readily available small molecular hole‐transporting material (HTM), OMe‐TATPyr, was synthesized and tested in perovskite solar cells (PSCs). OMe‐TATPyr is a two‐dimensional π‐conjugated molecule ...with a pyrene core and four phenyl‐thiophene bridged triarylamine groups. It can be readily synthesized in gram scale with a low lab cost of around US$ 50 g−1. The incorporation of the phenyl‐thiophene units in OMe‐TATPyr are beneficial for not only carrier transportation through improved charge delocalization and intermolecular stacking, but also potential trap passivation via Pb–S interaction as supported by depth‐profiling XPS, photoluminescence, and electrochemical impedance analysis. As a result, an impressive best power conversion efficiency (PCE) of up to 20.6 % and an average PCE of 20.0 % with good stability has been achieved for mixed‐cation PSCs with OMe‐TATPyr with an area of 0.09 cm2. A device with an area of 1.08 cm2 based on OMe‐TATPyr demonstrates a PCE of 17.3 %.
A 2D hole‐transporting material with a pyrene core and four phenyl‐thiophene bridged triarylamine groups, OMe‐TATPyr, was readily synthesized at low cost on a gram scale. A power conversion efficiency (PCE) of up to 20.6 % (average PCE 20.0 %) was achieved for mixed‐cation perovskite solar cells with OMe‐TATPyr, outperforming devices with Spiro‐OMeTAD.
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BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
Two new hole transporting materials (HTMs) based on triphenylamine and carbazole core moieties are designed and applied in planar perovskite solar cells. 18.2% power conversion efficiency (PCE) has ...been achieved, and 84% of the initial performance can be retained after 50 days.
We study the mass spectra and radiative decays of doubly heavy baryons within the diquark picture in a relativized quark model. The mass of the JP=1/2+ Ξcc ground state is predicted to be 3606 MeV, ...which is consistent with the mass of Ξcc++(3621) newly observed by the LHCb Collaboration. The predicted mass gap between two S-wave states, Ξcc* (JP=3/2+) and Ξcc (JP=1/2+), is 69 MeV. Furthermore, the radiative transitions of doubly heavy baryons are also estimated by using the realistic wave functions obtained from relativized quark model. The radiative decay widths of Ξcc*++→Ξcc++γ and Ξcc*+→Ξcc+γ are predicted to be about 7 and 4 keV, respectively. These predictions of doubly heavy baryons can provide helpful information for future experimental searches.
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Derived from our original nomogram study by using the risk variables from multivariable analyses in the derivation cohort of 1383 patients with extranodal NK/T-cell lymphoma, nasal-type (ENKTCL) who ...were mostly treated with anthracycline-based chemotherapy, we propose an easily used nomogram-revised risk index (NRI), validated it and compared with Ann Arbor staging, the International Prognostic Index (IPI), Korean Prognostic Index (KPI), and prognostic index of natural killer lymphoma (PINK) for overall survival (OS) prediction by examining calibration, discrimination, and decision curve analysis in a validation cohort of 1582 patients primarily treated with non-anthracycline-based chemotherapy. The calibration of the NRI showed satisfactory for predicting 3- and 5-year OS in the validation cohort. The Harrell's C-index and integrated Brier score (IBS) of the NRI for OS prediction demonstrated a better performance than that of the Ann Arbor staging system, IPI, KPI, and PINK. Decision curve analysis of the NRI also showed a superior outcome. The NRI is a promising tool for stratifying patients with ENKTCL into risk groups for designing clinical trials and for selecting appropriate individualized treatment.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
In this communication, a novel artificial neural network (ANN) model is proposed to describe the antenna performance with various parameters. In this model, three parallel and independent branches ...are involved for three different performance parameters. Meanwhile, a data-classification technique of support vector machine is also included to classify geometrical variables into the proper categories. Once the geometrical variables are input, the ANN model can simultaneously obtain S-parameter, gain, and radiation pattern from the independent branches. The validity and efficiency of this proposed model are confirmed with a Fabry-Perot resonator antenna example.
Lithium (Li) metal is promising in the next‐generation energy storage systems. However, its practical application is still hindered by the poor cycling performance and serious safety issues for the ...consequence of dendritic Li. Herein, a dendrite‐free Li/carbon nanotube (CNT) hybrid is proposed, which is fabricated by direct coating molten Li on CNTs, for Li‐metal batteries. The favorable thermodynamic and kinetic conditions are the powerful force to drive the rapid lift upwards and infusion of molten Li into CNTs network, which is the key to form a uniform metallic layer in Li/CNTs hybrid. The obtained hybrid indicates super‐stable functions even at an ultrahigh current density of 40 mA cm−2 for 2000 cycles with a stripping/plating capacity of 2 mAh cm−2 in symmetric cells. Subsequently, this hybrid also demonstrates a significantly decreased resistance, excellent cycling stability at high current density and flexibility in the full Li‐S battery. This work provides valuable concepts in fabricating Li anodes toward Li‐metal batteries and beyond for their high‐level services.
A dendrite‐free Li/carbon nanotube (CNT) hybrid is fabricated by direct coating of molten Li on CNTs for Li‐metal batteries. Favorable thermodynamic and kinetic conditions are a powerful force to drive the rapid lift upward and infusion of molten Li into CNTs network. The obtained hybrid exhibits superstable function even at an ultrahigh current density.
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The strong and radiative decay properties of the low-lying Ωc states are studied in a constituent quark model. We find that the newly observed Ωc states by the LHCb Collaboration can fit well in the ...decay patterns. Thus, their spin parity can possibly be assigned as the following: (i) Ωc(3000) has JP=1/2− and corresponds to the narrow 1P mixed state |1P2λ12−⟩1; its partner |1P2λ12−⟩2 should be a broad state with a width of ∼100 MeV. (ii) Ωc(3050) and Ωc(3066) can be assigned to be two JP=3/2− states, |1P4λ32−⟩ and |1P2λ32−⟩, respectively. (iii) Ωc(3090) can be assigned as the |1P4λ52−⟩ state with JP=5/2−. (iv) Ωc(3119) might correspond to one of the two 2S states of the first radial excitations, i.e., |2S2λλ12+⟩ or |2S4λλ32+⟩.
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A dynamic adjustment kernel extreme learning machine with transfer functions is proposed for parametric modeling of the electromagnetic behavior of microwave components. If satisfactory accuracy has ...not been obtained, the proposed model, which supports the functionalities of increased learning, reduced learning, and hybrid learning, can utilize the overlap between the old training data set and the new one to achieve the accurate trained results with faster retraining. The validity of the proposed model is confirmed with two examples of a microstrip-to-microstrip vertical transition and a quadruple-mode filter.
In the present work, we analyze the P-wave singly heavy baryon spectrum belonging to 6F by combining the observations of the heavy baryon states, and restudy the strong decays of the 1P -wave Σb ...states within the j−j coupling scheme using the chiral quark model. We obtain that (i) the structure Σb ( 6097 ) observed in the Λbπ final state may arise from the overlapping of Σb | JP = 3/2−, 2 ⟩ and Σb | JP = 5/2−, 2 ⟩ . (ii) The broad structure Σb ( 6072 ) observed in the Λbππ final state may arise from the overlapping of Σb | JP = 1/2−, 1 ⟩ and Σb | JP = 3/2−, 1 ⟩ . (iii) The missing state Σb | JP = 1/2−, 0 ⟩ is most likely to be a narrow state with a width of Γ ∼ 10 MeV , and mainly decays into the Λbπ channel.
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We aimed to determine the survival benefits of chemotherapy (CT) added to radiotherapy (RT) in different risk groups of patients with early‐stage extranodal nasal‐type NK/T‐cell lymphoma (ENKTCL), ...and to investigate the risk of postponing RT based on induction CT responses. A total of 1360 patients who received RT with or without new‐regimen CT from 20 institutions were retrospectively reviewed. The patients had received RT alone, RT followed by CT (RT + CT), or CT followed by RT (CT + RT). The patients were stratified into different risk groups using the nomogram‐revised risk index (NRI). A comparative study was performed using propensity score‐matched (PSM) analysis. Adding new‐regimen CT to RT (vs RT alone) significantly improved overall survival (OS, 73.2% vs 60.9%, P < .001) and progression‐free survival (PFS, 63.5% vs 54.2%, P < .001) for intermediate‐risk/high‐risk patients, but not for low‐risk patients. For intermediate‐risk/high‐risk patients, RT + CT and CT + RT resulted in non‐significantly different OS (77.7% vs 72.4%; P = .290) and PFS (67.1% vs 63.1%; P = .592). For patients with complete response (CR) after induction CT, initiation of RT within or beyond three cycles of CT resulted in similar OS (78.2% vs 81.7%, P = .915) and PFS (68.2% vs 69.9%, P = .519). For patients without CR, early RT resulted in better PFS (63.4% vs 47.6%, P = .019) than late RT. Risk‐based, response‐adapted therapy involving early RT combined with CT is a viable, effective strategy for intermediate‐risk/high‐risk early‐stage patients with ENKTCL in the modern treatment era.
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