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Overcoming the thickness paradox: Systematical optimization of inverted polymer solar cells
Xinyuan Xia,Zuqiang Bian,Chunhui Huang 한국물리학회 2015 Current Applied Physics Vol.15 No.11
Inverted structure comes out to be a promising alternative for making polymer solar cells (PSC) with high efficiency and long-term stability. Vertically stacked functional layers with planar shapes often suffer contradictions in holding high optical absorption and excellent charge transfer/hindrance capability to construct well performed inverted PSC devices. Here, we give an example of rational control of the thickness of electron transport layer (ETL), hole transport layer (HTL) and organic active layer (OAL) to achieve a synergistic effect on promoting the overall photovoltaic behaviors. With in-depth exploration of the interaction between device performance and layer thickness, we obtain the optimized device ITO/ ZnO Ncs (45 nm)/P3HT:PCBM (70 nm)/MoO3 (1 nm)/Ag (70 nm) exhibiting an Voc of 0.63 V, Jsc of 12.52 mA/cm2, FF of 54% and PCE of 4.26%.
Development of Unity3D Network Functionality on Android
Shangguan Dayan,Huang Xinyuan 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.2
In the field of Mobile Terminal (MT), Unity3D game engine has displayed outstanding rendering power and highly aggregated script editing function while in practice the network function of Unity3D has not been fully developed yet. This paper, based on the comparison with traditional network technology, proposed to invoke Java to create a WIFI Local Area Network (WLAN), in which Unity network view component and remote procedure call (RPC) are employed to synchronize data and images on both ends of the network, thus developing a Unity online game. Finally the author of this paper has designed an online Unity3D chess game based on Android mobile platform. The results indicate that the invocation of Java has made up the deficiency of Unity network while RPC, as a reliable, free and economical method in the network transmission displays great adaptability. The combination of Java and RPC has proved to be a simple but an effective way to develop mobile online game.
Study of generalized electric spring modeling based on Hamilton’s principle and its stability
Xiaohu Wang,Chaohui Zhao,Xinyuan Chen,Zhun Huang 전력전자학회 2024 JOURNAL OF POWER ELECTRONICS Vol.24 No.5
The proposed generalized electric spring (G-ES) topology effectively reduces the redundancy caused by the parallel structure of multiple electric springs in a microgrid system. A modeling method for the G-ES is urgently needed to accurately determine the G-ES parameters and to evaluate its transient operation characteristics. The correspondence between Hamilton’s principle in mechanics and electricity is introduced, and the feasibility of Hamilton’s principle under the smart load topology is verified. The modeling method of the G-ES under Hamilton’s principle is discussed, followed by the application of repetitive control strategies on the G-ES. The filter parameters are designed using the normalization method and a simplified parameter design using repetitive controllers was applied. This article introduces the impedance analysis method into the generalized electric spring to analyze its stability under weak network conditions. This work also derives the stability judgment criteria for generalized electric springs. Finally, the feasibility of modeling the G-ES based on the Hamilton’s principle was verified using MATLAB and a DSP hardware system. In addition, the consistency between the G-ES and a single intelligent load was verified under the Hamilton’s modeling principle. The G-ES stability and dynamic performance under this modeling method meet industry requirements.