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| 1 | Tailored PEDOT:PSS hole transport layer for higher performance in perovskite solar cells: Enhancement of electrical and optical properties with improved morphology显示文摘Precise control over the charge carrier dynamics throughout the device can result in outstanding performance of perovskite solar cells(PSCs).Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)is the most actively studied hole transport material in p-i-n structured PSCs.However,charge transport in the PEDOT:PSS is limited and inefficient because of its low conductivity with the presence of the weak ionic conductor PSS.In addition,morphology of the underlying PEDOT:PSS layer in PSCs plays a crucial role in determining the optoelectronic quality of the active perovskite absorber layer.This work is focused on realization of a non-wetting conductive surface of hole transport layer suitable for the growth of larger perovskite crystalline domains.This is accomplished by employing a facile solventengineered(ethylene glycol and methanol)approach resulting in removal of the predominant PSS in PEDOT:PSS.The consequence of acquiring larger perovskite crystalline domains was observed in the charge carrier dynamics studies,with the achievement of higher charge carrier lifetime,lower charge transport time and lower transfer impedance in the solvent-engineered PEDOT:PSS-based PSCs.Use of this solventengineered treatment for the fabrication of MAPbI3 PSCs greatly increased the device stability witnessing a power conversion efficiency of 18.18%,which corresponds to^37%improvement compared to the untreated PEDOT:PSS based devices. | Khan Mamun Reza Ashim Gurung Behzad Bahrami Sally Mabrouk Hytham Elbohy Rajesh Pathak Ke Chen Ashraful Haider Chowdhury Md Tawabur Rahman Steven Letourneau Hao-Cheng Yang Gopalan Saianand Jeffrey WElam Seth BDarling Qiquan Qiao | 2020 | Journal of Energy Chemistry2020，29，5： | 4 |
| 2 | Risk of second primary malignancies in a population-based study of adult patients with essential thrombocythemia显示文摘AIM:To determine the risk of second primary malignancy(SPM) and survival of patients with essential thrombocythemia(ET).METHODS:We identified all patients with ET diagnosed during 2001 to 2011 from the Surveillance,Epidemiology and End Results(SEER) 18 database.Actuarial and relative survival methods were used to calculate the survival statistics.We utilized the SEER 13 database to calculate SPM.We used multiple primary standardized incidence ratio(SIR) session of the SEER*Stat software(version 8.1.5) to calculate SIR and excess risk of SPM for ET patients.RESULTS:Age standardized five-year cause-specific survival was greater for patients < 50 years vs those ≥ 50 years(99.4% vs 93.5%,P < 0.01).Five-year causespecific survival was lower for men vs women(70.2% vs 79.7%).A total of 201 patients(2.46%) developed SPM at a median age of 75 years.SPMs occurred at an observed/expected(O/E) ratio of 1.26(95%CI:1.09-1.45,P = 0.002) with an absolute excess risk(AER) of 37.44 per 10000 population.A significantly higher risk was noted for leukemia(O/E 3.78; 95%CI:2.20-6.05,P < 0.001; AER 11.28/10000).CONCLUSION:ET patients have an excellent causespecific five-year survival but are at an increased risk of SPM,particularly leukemia,which may contribute to excess deaths. | Rajesh Shrestha Smith Giri Ranjan Pathak Vijaya Raj Bhatt | 2016 | World Journal of Clinical Oncology2016，7，4： | 1 |
| 3 | Tuberculosis of the Craniovertebral Junction: Is Surgery Necessary?显示文摘 | Sunil K. Gupta Sandeep Mohindra Bhawani S. Sharma Rahul Gupta Rajesh Chhabra Kanchan K. Mukherjee Manoj K. Tewari Ashis Pathak Niranjan Khandelwal Narain M. Suresh Virender K. Khosla | 2006 | Neurosurgery2006，，6： | 1 |
| 4 | Nanoscale control of grain boundary potential barrier, dopant density and filled trap state density for higher efficiency perovskite solar cells显示文摘In this work,grain boundary(GB)potential barrier(ΔφGB),dopant density(Pnet),and filled trap state density(PGB,trap)were manipulated at the nanoscale by exposing the fabricated perovskite films to various relative humidity(RH)environments.Spatial mapping of surface potential in the perovskite film revealed higher positive potential at GBs than inside the grains.The averageΔφGB,Pnet,and PGB,trap in the perovskite films decreased from 0%RH to 25%RH exposure,but increased when the RH increased to 35%RH and 45%RH.This clearly indicated that perovskite solar cells fabricated at 25%RH led to the lowest average GB potential,smallest dopant density,and least filled trap states density.This is consistent with the highest photovoltaic efficiency of 18.16%at 25%RH among the different relative humidities from 0%to 45%RH. | Behzad Bahrami Sally Mabrouk Nirmal Adhikari Hytham Elbohy Ashim Gurung Khan M.Reza Rajesh Pathak Ashraful H.Chowdhury Gopalan Saianand Wenjin Yue Jiantao Zai Xuefeng Qian Mao Liang Qiquan Qiao | 2020 | InfoMat2020，2，2： | 1 |
| 5 | Effective data transmission through energy-efficient clustering and Fuzzy-Based IDS routing approach in WSNs显示文摘Wireless sensor networks(WSN)gather information and sense information samples in a certain region and communicate these readings to a base station(BS).Energy efficiency is considered a major design issue in the WSNs,and can be addressed using clustering and routing techniques.Information is sent from the source to the BS via routing procedures.However,these routing protocols must ensure that packets are delivered securely,guaranteeing that neither adversaries nor unauthentic individuals have access to the sent information.Secure data transfer is intended to protect the data from illegal access,damage,or disruption.Thus,in the proposed model,secure data transmission is developed in an energy-effective manner.A low-energy adaptive clustering hierarchy(LEACH)is developed to efficiently transfer the data.For the intrusion detection systems(IDS),Fuzzy logic and artificial neural networks(ANNs)are proposed.Initially,the nodes were randomly placed in the network and initialized to gather information.To ensure fair energy dissipation between the nodes,LEACH randomly chooses cluster heads(CHs)and allocates this role to the various nodes based on a round-robin management mechanism.The intrusion-detection procedure was then utilized to determine whether intruders were present in the network.Within the WSN,a Fuzzy interference rule was utilized to distinguish the malicious nodes from legal nodes.Subsequently,an ANN was employed to distinguish the harmful nodes from suspicious nodes.The effectiveness of the proposed approach was validated using metrics that attained 97%accuracy,97%specificity,and 97%sensitivity of 95%.Thus,it was proved that the LEACH and Fuzzy-based IDS approaches are the best choices for securing data transmission in an energy-efficient manner. | Saziya TABBASSUM Rajesh Kumar PATHAK | 2024 | 虚拟现实与智能硬件(中英文)2024，6，1： | 0 |
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