Dr. Yang Gao Profile

Dr. Yang Gao

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Publications (10)

Proceedings Article | 5 March 2021 Presentation + Paper

Controlling the photon absorption characteristics in avalanche photodetectors for high resolution biomedical imaging

Cesar Bartolo-Perez, Soroush Ghandiparsi, Ahmed Mayet, Ahasan Ahamed, Wayesh Qarony, Hilal Cansizoglu, Yang Gao, Shih-Yuan Wang, Simon Cherry, M. Saif Islam, Gerard Ariño-Estrada

Proceedings Volume 11658, 116580B (2021) https://doi.org/10.1117/12.2577805

KEYWORDS: Absorption, Avalanche photodetectors, Image resolution, Photodetectors, Finite-difference time-domain method, Ultrafast phenomena, TCAD, Structural design, Spatial resolution, Single photon

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Proceedings Article | 17 September 2018 Presentation

High efficiency flexible silicon photodetectors and photovoltaics (Conference Presentation)

Hilal Cansizoglu, Yang Gao, Cesar Bartolo Perez, Soroush Ghandiparsi, Ekaterina Ponizovskaya, Toshishige Yamada, Aly ElRefaie, Shih-Yuan Wang, M. Saif Islam

Proceedings Volume 10725, 107250F (2018) https://doi.org/10.1117/12.2323845

KEYWORDS: Silicon, Photodetectors, Photovoltaics, Crystals, Internet, Manufacturing, Photodiodes, Solar cells, Optical fiber cables, Receivers

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Proceedings Article | 17 September 2018 Presentation

Toward all-silicon optical receivers: photon trapping and manipulation using nanostructures (Conference Presentation)

Hilal Cansizoglu, Yang Gao, Cesar Bartolo Perez, Soroush Ghandiparsi, Kazim Polat, Hasina Mamtaz, Ekaterina Ponizovskaya Devine, Toshishige Yamada, Aly Elrefaie, Shih-Yuan Wang, Saif Islam

Proceedings Volume 10725, 107250B (2018) https://doi.org/10.1117/12.2323457

KEYWORDS: Palladium, Receivers, Nanostructures, Silicon, Ultrafast phenomena, Optical interconnects, Photodetectors, Integrated optics, Germanium, Semiconductors

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Development of cost-effective and power-efficient optical interconnects is required to meet high demand of data transfer in the era of Internet of Things (IoT) that is expected to connect billions of sensors with different functionalities. The cost of optical links must be reduced for a wide adoption of optical interconnects in the fast data transmission systems. Monolithic integration of ultra-fast photodetectors (PDs), one of the major components of optical receivers-with CMOS/BiCMOS circuits, can reduce the cost dramatically. However, expensive material systems and non-CMOS-compatible processing utilized in the current high-speed photodetectors do not promise a monolithic integration to the required circuitry in the near future. On the other hand, high speed PDs with CMOS-compatible material systems such as silicon (Si), germanium (Ge) or SiGe alloys have poor responsivity for the wavelengths of interest at data rates 10 Gb/s or higher. Our solution to this problem is to increase the optical absorption properties of the semiconductor by introducing micro-/nanoscale air holes to the material. Such micro/nanoholes support an ensemble of modes that propagate laterally inside in a very thin layer of semiconductor (<2µm) which is required for high speed operations. The recent demonstration of surface-illuminated high-speed (>25Gb/s) and high efficiency (>50%) Si PDs with integrated micro-/nanoholes proved that light bending can enable ultra-fast Si-based PDs for monolithic integration with CMOS/BiCMOS circuits to realize cost-effective all-Si optical receivers. In this talk, a review of state-of-the art ultra-fast Si PDs for short-reach data communication will be presented and high speed and high efficiency PDs with alternative Si-based material systems will be demonstrated for the applications in long-reach optical links. Future opportunities that light-bending phenomenon can offer in high performance PD design for various applications such as single photon detection, LIDAR and high-performance computing will be discussed.

Proceedings Article | 31 May 2018 Paper

Black holes enabled light bending and trapping in ultrafast silicon photodetectors

Hilal Cansizoglu, Yang Gao, Soroush Ghandiparsi, Cesar Bartolo Perez, Hasina Mamtaz, Mehmet Cansizoglu, Toshishige Yamada, Ekaterina Ponizovskaya Devine, Aly Elrefaie, Shih-Yuan Wang, M. Saif Islam

Proceedings Volume 10639, 106390I (2018) https://doi.org/10.1117/12.2309830

KEYWORDS: Silicon, Absorption, Palladium, Data communications, Photons, Reflection, Ultrafast phenomena, Photodetectors, Refractive index, Semiconductors

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Proceedings Article | 25 August 2017 Paper

Highly efficient silicon solar cells designed with photon trapping micro/nano structures

Cesar Bartolo-Perez, Yang Gao, Hilal Cansizoglu, Soroush Ghandiparsi, Ahmet Kaya, Ahmed Mayet, Ekaterina Ponizovskaya Devine, Toshishige Yamada, Aly Elrefaie, Shih-Yuan Wang, M. Saif Islam

Proceedings Volume 10349, 103491D (2017) https://doi.org/10.1117/12.2276633

KEYWORDS: Solar cells, Photonic microstructures, Silicon, Photovoltaics, Absorption, Fabrication, Wet etching, Dry etching, Etching, Silicon solar cells

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Proceedings Article | 25 August 2017 Paper

Photon-trapping micro/nanostructures for high linearity in ultra-fast photodiodes

Hilal Cansizoglu, Yang Gao, Cesar Bartolo Perez, Soroush Ghandiparsi, Ekaterina Ponizovskaya Devine, Mehmet Cansizoglu, Toshishige Yamada, Aly Elrefaie, Shih-Yuan Wang, M. Saif Islam

Proceedings Volume 10349, 103491C (2017) https://doi.org/10.1117/12.2276612

KEYWORDS: Photonic microstructures, Ultrafast phenomena, Silicon, Photodetectors, Photodiodes, Data communications, Computer networks, Absorption

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Proceedings Article | 25 August 2017 Presentation + Paper

Improved bandwidth and quantum efficiency in silicon photodiodes using photon-manipulating micro/nanostructures operating in the range of 700-1060 nm

Hilal Cansizoglu, Yang Gao, Soroush Ghandiparsi, Ahmet Kaya, Cesar Bartolo Perez, Ahmed Mayet, Ekaterina Ponizovskaya Devine, Mehmet Cansizoglu, Toshishige Yamada, Aly Elrefaie, Shih-Yuan Wang, M. Saif Islam

Proceedings Volume 10349, 103490U (2017) https://doi.org/10.1117/12.2276611

KEYWORDS: Silicon, Quantum efficiency, Photodetectors, Nanostructures, Photonic microstructures, Silicon photonics, Absorption, Photovoltaics

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Proceedings Article | 25 August 2017 Presentation + Paper

Fabrication of effective photon trapping and light manipulating micro/nano structures

Yang Gao, Hilal Cansizoglu, Soroush Ghandiparsi, Cesar Bartolo-Perez, Ekaterina Ponizovskaya Devine, Aly Elrefaie, Shih-yuan Wang, M. Saif Islam

Proceedings Volume 10349, 103490T (2017) https://doi.org/10.1117/12.2276503

KEYWORDS: Photonic microstructures, Fabrication, Silicon, Germanium, Absorption, Wet etching, Dry etching, Etching, Nanofabrication, Time correlated photon counting

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Proceedings Article | 27 September 2016 Presentation + Paper

Inhibiting device degradation induced by surface damages during top-down fabrication of semiconductor devices with micro/nano-scale pillars and holes

Ahmed Mayet, Hilal Cansizoglu, Yang Gao, Ahmet Kaya, Soroush Ghandiparsi, Toshishige Yamada, Shih-Yuan Wang, M. Saif Islam

Proceedings Volume 9924, 99240C (2016) https://doi.org/10.1117/12.2241736

KEYWORDS: Oxidation, Semiconductors, Oxides, Diodes, Silicon, Etching, Ions, Deep reactive ion etching, Reactive ion etching, PIN photodiodes

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Proceedings Article | 16 September 2016 Paper

Efficient Si photovoltaic devices with integrated micro/nano holes

Hilal Cansizoglu, Yang Gao, Ahmet Kaya, Soroush Ghandiparsi, Kazim Polat, Yichuan Wang, Runzhou Zhang, Hind Reggad, Ahmed Mayet, Ekaterina Ponizovskaya Devine, M. Saif Islam

Proceedings Volume 9924, 99240V (2016) https://doi.org/10.1117/12.2241794

KEYWORDS: Silicon, Photovoltaics, Crystals, Solar energy, Ions, Oxides, Oxidation, Solar cells, Absorption, Scanning electron microscopy

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Showing 5 of 10 publications

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