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您的检索式：作者名="Fansong Meng"
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| 1 | Space charge behaviors in cable insulation under a direct current‐superimposed pulsed electric field显示文摘When high‐voltage direct current(HVDC)cables are subjected to a direct current(DC)‐superimposed pulsed electric stress,the pulsed voltage applied facilitates electrical tree generation and breakdown;however,the mechanism involved remains unclear.To study the deterioration mechanism of cable insulation under a pulsed electric field,an experi-ment on the dynamic characteristics of space charge under a DC‐superimposed pulsed electric field was conducted.For this experiment,a pulsed time trigger control circuit was developed to accurately measure the change law of the space charge in cross‐linked polyethylene samples at the rising and falling edges of the pulsed electric field.The experimental results showed an unusual change law:the space charge density increases with falling voltage amplitude and decreases with rising voltage amplitude.The sudden change in the electric field breaks the balance of the forces acting on the space charge,leading to injection,extraction and migration.The energy released during these dynamic processes may destroy the microstructure of the insulation material and contributes to the growth of the electrical tree.This study provides an insight on the initiation mechanism of electrical tree in HVDC cables and proposes a strategy to suppress electrical tree initiation. | Dongxin He Tao Zhang Fansong Meng Qingquan Li Wei Wang Hongshun Liu Gilbert Teyssedre | 2021 | High Voltage2021，6，3： | 4 |
| 2 | Recent Progress of Surface Passivation Molecules for Perovskite Solar Cell Applications显示文摘Due to the solution processable nature,the prepared perovskite films are polycrystalline with considerable number of defects.These defects,especially defects at interface accelerate the carrier recombination and reduce the carrier collection.Besides,the surface defects also affect the long-term stability of the perovskite solar cells(PVSCs).To solve this problem,surface passivation molecules are introduced at selective interface(the interface between perovskite and carrier selective layer).This review summarizes recent progress of small molecules used in PVSCs.Firstly,different types of defect states in perovskite films are introduced and their effects on device performance are discussed.Subsequently,surface passivation molecules are divided into four categories,and the interaction between the functional groups of the surface passivation molecules and selective defect states in perovskite films are highlighted.Finally,we look into the prospects and challenges in design noble small molecules for PVSCs applications. | Baohua Zhao Teng Zhang Wenwen Liu Fansong Meng Chengben Liu Nuo Chen Zhi Li Zhaobin Liu Xiyou Li | 2023 | Journal of Renewable Materials2023，11，4： | 0 |
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