A method for photo-detecting and an apparatus for the same are provided. The apparatus for photo-detecting includes a first P-N diode and a second P-N diode. The first P-N diode, has a first P-N junction which has a first thickness, by which a first electrical signal is generated when irradiated by light,...http://www.google.es/patents/US7579668?utm_source=gb-gplus-sharePatente US7579668 - Method for photo-detecting and apparatus for the same
Method for photo-detecting and apparatus for the same
