Thesis
Stabilization of organo-halide perovskites and their application as photodetectors
Master of Science (M.S.), Drexel University
Jun 2020
DOI:
https://doi.org/10.17918/00000180
Abstract
Organo-halide perovskite nanocrystals (OHPNCs) and their optoelectronic devices are receiving much attention recently. This is due to their high photoluminescence, quantum efficiency and optical band gap tunability over the entire visible and part of the near infrared range by modifying composition, dimensionality, or size. However, OHPNCs suffer from poor stability when exposed to moisture, and facile cubic to tetragonal phase transformation in ambient condition. By utilizing binary capping molecules, Oleic Acid (OA) and Oleylamine (OLA), it is shown that the stability against moisture and phase transformation in ambient condition can be achieved. Furthermore, the air stable OHPNCs was used to create a photodetector with a responsivity of 0.6 A/W using a 470 nm wavelength of light under 30 V bias, which is higher than the commercially available Si based photodetectors. Keywords: Perovskite, Photodetector
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Details
- Title
- Stabilization of organo-halide perovskites and their application as photodetectors
- Creators
- Chun Shen
- Contributors
- Steven J. May (Advisor)
- Awarding Institution
- Drexel University
- Degree Awarded
- Master of Science (M.S.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Number of pages
- 70 pages
- Resource Type
- Thesis
- Language
- English
- Academic Unit
- Materials (Science and) Engineering (Metallurgical Engineering) (1970-2026); College of Engineering (1970-2026); Drexel University
- Other Identifier
- 991014695139004721