Title :
Electrode design of coplanar-grid diamond film detectors by finite element method
Author :
Zeng, Qingkai ; Pan, Xiaoyu ; Bi, Mei ; Yan, Xingmao ; Wang, Linjun ; Huang, Jian ; Tang, Ke ; Zhang, Jijun ; Xia, Yiben
Author_Institution :
Sch. of Mater. Sci. & Eng., Shanghai Univ., Shanghai, China
Abstract :
The optimization of the electrode structure plays an important role in the improvement of the charge collection efficiency of diamond film radiation detector. In this paper the finite element (FE) method is utilized to design and optimize the electrode geometry. For 1×1 cm2 diamond film model, the detector provided the best charge collection efficiency and energy resolution, when the ratio of the electric potential loaded on collecting grid and non-collecting grid was 0.9, collecting as well as non-collecting grids´ width were 25 μm and gaps´ width was 12.5 μm. Widening the second and last second grids to 50 μm could efficiently reduce the edge effect and the detector could have good uniformity.
Keywords :
diamond; electrodes; finite element analysis; optimisation; thin film devices; coplanar-grid diamond film detectors; diamond film radiation detector; electrode design; finite element method; optimization; Detectors; Diamond-like carbon; Electric potential; Electrodes; Energy resolution; Image edge detection; Radiation detectors;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-5797-7
DOI :
10.1109/ICSICT.2010.5667705
