Light-Induced ESR in Variously Treated Hydrogenated Amorphous Silicon

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概要

• 論文の詳細を見る

• Light-induced ESR (LESR) in hydrogenated amorphous silicon at 77 K has been studied using four types of samples: standard, light-soaked, high-temperature-annealed (HTA), and low-temperature-deposited (LTs) samples. It is found that, in general, the density of neutral dangling bonds (D^0) increases under illumination. However, for strongly light-soaked samples, a slight decrease of the D^0 density occurs at illumination intensities below about 10 mW/cm^2. The dependence of the D^0 density on illumination is argued to be caused by the conversion between charged and neutral dangling bonds. It is inferred that the densities of both neutral and charged dangling bonds are increased in HTA and in LTs a-Si:H. An asymmetry is observed between the spin densities of the broad (N_b) and narrow (N_n) components of the LESR signal in all the samples. The ratio of N_b to N_n is strongly dependent on the type of sample. However, the illumination intensity dependences of N_b and N_n are found to be identical and follow a power law. This indicates that N_b and N_n are highly interdependent and are probably governed by the same microscopic process.

• 社団法人応用物理学会の論文
• 1995-08-15

著者

• SHIMIZU Tatsuo

  Department of Electrical and Computer Engineering, Faculty of Engineering, Kanazawa University

• KUMEDA Minoru

  Laboratory for Development of Engineering Materials, Faculty of Technology, Kanazawa University

• Shimizu Tadao

  Department Of Physics University Of Tokyo

• Shimizu T

  Department Of Electrical And Electronic Engineering Kanazawa University

• Kumeda M

  Kanazawa Univ. Kanazawa Jpn

• Kumeda Minoru

  Laboratory For Development Of Engineering Materials Faculty Of Engineering Kanazawa University

• Shimizu T

  Chiba Univ. Chiba Jpn

• Zhou J‐h

  Department Of Electrical And Computer Engineering Faculty Of Engineering Kanazawa University

• Zhou Jiang-huai

  Department Of Electrical And Computer Engineering Faculty Of Technology Kanazawa University

• Shimizu Tatsuo

  Department Of Applied Physics University Of Tokyo

• Zhou Jiang-huai

  Department Of Electrical And Computer Engineering Faculty Of Engineering Kanazawa University

• KUMEDA Minoru

  Department of Electronics Faculty of Technology, Kanazawa University

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