Enhancing the Efficiencies of Organic Photovoltaic and Organic Light-Emitting Diode Devices by Regular Nano-Wrinkle Patterns

Organic photovoltaic (OPV) cells and organic light-emitting diodes (OLEDs) are energy harvesting and generation devices that have attracted great attention these years because of their low costs, thin film structures, flexibility and environment-friendly manufacturing processes. For such thin film devices, photon management methods that increase the light absorption of OPV cells and the light extraction from OLEDs are highly desirable. Here, we report the experimental efforts to fabricate geometrically tunable and spontaneously formed nano-wrinkle structures with large areas, and the theoretical results on photon management with the nano-wrinkles.     

论零营运资金管理

本文论述了采用“零营运资金管理”可为企业带来更大收益的观点。通过大量举借短期负债来满足营运资金需求,降低企业的资金成本。由此,从两个方面增加了企业的收益。最后,作者结合我国实际情况,提出了我国实行“零营运资金管理”过程中应注意的几个问题。     

浅谈工程造价的结算审核

工程造价的结算审核是合理确定工程造价的必要程序及重要手段。通过对预、结算进行全面、系统的检查和复核,及时纠正所存在的错误和问题,使之更加合理地确定工程造价,达到有效地控制工程造价的目的,减少建设单位对工程项目的资金浪费,从而保证项目目标管理的实现。     

论财务杠杆

财务杠杆是指企业利用负债来调节权益资本收益的手段。合理运用财务杠杆给企业权益资本带来的额外收益,即财务杠杆利益。由于财务杠杆受多种因素的影响,在获得财务杠杆利益的同时,也伴随着不可估量的财务风险。因此,认真研究财务杠杆并分析影响财务杠杆的各种因素,搞清其作用、性质以及对企业权益资金收益的影响,是合理运用财务杠杆为企业服务的基本前提。