The Auto-Measuring System for Weak Current of Organic/Polymer Light-Emitting Diode
Bao-Qi Liu · Jiliang xuebao · 2004
A new computer-controlled apparatus for weak current measurement of organic/polymer light-emitting diode (LED) is proposed, in which the estimation method of parameters combining with T-type negative feedback resistance network is used to realize, a high accuracy and automatic measurement of the weak current. The current measurement ranges are from 1 fA to 100 mA. The measuring accuracy is 0.1%～10%R. The resolution is 1 fA. The limit sensitivity is 0.5 fA. The measuring data is transmitted through the standard interface. The frequency spectrum, amplitude phase spectrum and the statistic parameter analyze of the stochastic process for each component of the weak current are provided by automatic data processing.