{'fraction_non_alphanumeric': 0.031496062992125984, 'fraction_numerical': 0.015748031496062992, 'mean_word_length': 4.655555555555556, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Shot Noise in Back-Biased Step Junctions with Exponential Carrier Generation Rate

A theory of noise due to carrier generation in the space charge region of one-sided abrupt junctions with exponentially graded generation rate is presented. Assuming that the generation rate is expressed as C0 exp (-x/a) and the noise spectrum as S(ω)=2qIΓ2, we find that the noise reduction factor Γ2 lies between 0.68 and 1, depending upon the ratio of the characteristic length, a, to the width of the space charge region.