Gulinatti Angelo, Rech Ivan, Maccagnani Piera, Cova Sergio, Ghioni Massimo
Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria, piazza Leonardo da Vinci 32 - 20133 Milano, Italy.
IMM-CNR sezione di Bologna, Via Piero Gobetti, 101 - 40129 Bologna, Italy.
Proc SPIE Int Soc Opt Eng. 2013 May 29;8727:87270M-. doi: 10.1117/12.2016384.
In order to fulfill the requirements of many applications, we recently developed a new technology aimed at combining the advantages of traditional thin and thick silicon Single Photon Avalanche Diodes (SPAD). In particular we demonstrated single-pixel detectors with a remarkable improvement in the Photon Detection Efficiency at the longer wavelengths (e.g. 40% at 800nm) while maintaining a timing jitter better than 100ps. In this paper we will analyze the factors the currently prevent the fabrication of arrays of SPADs by adopting such a Red-Enhanced (RE) technology and we will propose further modifications to the device structure that will enable the fabrication of high performance RE-SPAD arrays for photon timing applications.
为了满足许多应用的需求,我们最近开发了一种新技术,旨在结合传统薄型和厚型硅单光子雪崩二极管(SPAD)的优点。特别是,我们展示了单像素探测器,其在较长波长处的光子探测效率有显著提高(例如,在800nm处为40%),同时保持了优于100ps的定时抖动。在本文中,我们将分析目前采用这种红增强(RE)技术制造SPAD阵列时阻碍制造的因素,并提出对器件结构的进一步修改,这将能够制造用于光子定时应用的高性能RE-SPAD阵列。