gan78In this study, we investate the GaN SB PDs with graded doping prepared on PSS, turning out that: (1) the fabricated devices have an extremely low dark current, a large UV-toGAN78 Selamat Datang di Website Resmi Desa Brasau Kec. Tungkal Ulu Kab. Tanjung Jabung Barat Prov. Jambi.