专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08239165B1 Ultra-fast determination of quantum efficiency of a solar cell 有权
标题翻译：超快速测定太阳能电池的量子效率
公开(公告)号：US08239165B1
公开(公告)日：2012-08-07
申请号：US12237452
申请日：2008-09-25
申请人： David L. Young , Brian Egaas , Pauls Stradins
发明人： David L. Young , Brian Egaas , Pauls Stradins
IPC分类号： G06F11/30 , G06F11/00
CPC分类号： H02S50/10
摘要： An apparatus for measuring quantum efficiency (QE) of solar cells. The apparatus includes a light source including an array of light emitting diodes (LEDs) that each emit light corresponding to a differing portion of a test spectrum and each LED is driven by a sinusoidal power supply that operates at a unique frequency. The light source includes an optical coupling focusing the LED light into a test beam targeted on a solar cell, and a signal conditioner converts analog current signals generated by the solar cell into digital voltage signals. A QE measurement module determines a QE value corresponding to each of the LEDs based on the digital voltage signals using a Fast Fourier Transform module that processes the digital voltage signals to generate values for each operating frequency. The QE measurement module determines the QE values by applying a conversion factor to these values. Since all the LEDs can be power-modulated simultaneously and the corresponding cell responses to each of the LEDS can be analyzed simultaneously, the QE spectrum measurement time is greatly shortened as compared to conventional methods.
摘要翻译：一种用于测量太阳能电池的量子效率（QE）的装置。该装置包括一个光源，该光源包括一组发光二极管（LED），每个发光二极管发射对应于测试光谱不同部分的光，每个LED由以唯一频率工作的正弦电源驱动。光源包括将LED光聚焦到目标在太阳能电池上的测试光束中的光耦合器，并且信号调节器将由太阳能电池产生的模拟电流信号转换为数字电压信号。 QE测量模块基于使用快速傅立叶变换模块的数字电压信号来确定与每个LED相对应的QE值，该模块处理数字电压信号以产生每个工作频率的值。 QE测量模块通过将转换因子应用于这些值来确定QE值。由于可以同时对所有LED进行功率调制，并且可以同时分析对每个LED的相应的单元响应，所以与常规方法相比，QE光谱测量时间大大缩短。

IPRDB

热门服务

关于我们

友情链接

联系方式