Recent improvement of silicon absorption in opto-electric devices
Journal Title: Opto-Electronic Advances - Year 2019, Vol 2, Issue 10
Abstract
Silicon dominates the contemporary electronic industry. However, being an indirect band-gap material, it is a poor absorber of light, which decreases the efficiency of Si-based photodetectors and photovoltaic devices. This review highlights recent studies performed towards improving the optical absorption of Si. A summary of recent theoretical approaches based on the first principle calculation has been provided. It is followed by an overview of recent experimental approaches including scattering, plasmon, hot electron, and near-field effects. The article concludes with a perspective on the future research direction of Si-based photodetectors and photovoltaic devices.
Authors and Affiliations
Takashi Yatsui
Keywords
Related Articles
- EP ID EP683116
- DOI 10.29026/oea.2019.190023
- Views 171
- Downloads 0
Atomic layer deposition for quantum dots based devices
Quantum dots (QDs) are promising candidates for the next-generation optical and electronic devices due to the out-standing photoluminance efficiency, tunable bandgap and facile solution synthesis. Nevertheless, the limit...
Recent advances in nonlinear optics for bio-imaging applications
Nonlinear optics, which is a subject for studying the interaction between intense light and materials, has great impact on various research fields. Since many structures in biological tissues exhibit strong nonlinear opt...
History, current developments, and future directions of near-field optical science
This paper reviews the science of the optical near-field (ONF), which is created and localized in a nanometer-sized material (NM) or on its surface. It is pointed out that work on near-field optics was started in order t...
Multifunctional inverse sensing by spatial distribution characterization of scattering photons
Inverse sensing is an important research direction to provide new perspectives for optical sensing. For inverse sensing, the primary challenge is that scattered photon has a complicated profile, which is hard to derive a...
High-sensitivity distributed dynamic strain sensing by combining Rayleigh and Brillouin scattering
The phase-sensitive optical time-domain reflectometry (φ-OTDR) is a good candidate for distributed dynamic strain sensing, due to its high sensitivity and fast measurement, which has already been widely used in intrusion...