Ultra-thin super absorbing photon trapping materials for high-performance infrared detection

Rabiee-Golgir, Hossein; Ghandiparsi, Soroush; Devine, Ekaterina Ponizovskaya; Mayet, Ahmed S.; Bartolo-Perez, Cesar; Wijewarnasuriya, P. S.; Dhar, Nibir K.; Islam, M. Saif

doi:10.1117/12.2518690

Cited by 6 publications

(5 citation statements)

References 20 publications

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“…L IGHT absorption in plasmonic nanostructures has recently attracted significant interest in applications such as solar cells [1], [2], metamaterials (MMs) [3]- [7], photodetectors [8], [9], sensors [6]- [13], detectors [14]- [16], nanoimaging [17]- [19], slow light devices [20]- [24], and thermal emitters [25]- [27]. One of the most important types of MMs that has recently attracted considerable attention of many researchers is the MM perfect absorber (MMPA).…”

Section: Introductionmentioning

confidence: 99%

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The Potential of Refractive Index Nanobiosensing Using a Multi-Band Optically Tuned Perfect Light Metamaterial Absorber

et al. 2021

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An optically tunable perfect light absorber as a refractive index (RI) metamaterial (MM) nanobiosensor (NBS) is designed for sensing chemicals, monitoring the concentration of water-soluble glucose, and detecting viruses. This plasmon induced tunable metasurface works based on multiband super-absorption in the infrared frequency regime. It consists of a metal mirror that facilitates the MM to work as an absorber where the metal pattern at the top layer creates an enhanced evanescent wave that facilitates the metasurface to work as a RI optical sensor. The modelling and numerical analysis are carried out using Finite Difference Time Domain (FDTD) method-based software, CST microwave studio where a genetic algorithm (GA) is used to optimize the geometric parameters. We demonstrate multiband super-absorption spectra having maximum absorption of more than 99%. Furthermore, we show how the multiband super-absorber nanostructure can be used as a RI NBS, where the resonance frequency shifts with the RI of the surrounding medium. The achieved opto-chemical sensitivity is approximately 65nm/RIU RIU, the bio-optical sensitivity to detect viruses is approximately 76 nm / RIU; and the optical sensitivity of the water-soluble glucose concentration is about 300nm/RIU; all sensitivities are comparable in comparison with the reported values in the literature.

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Section: Introductionmentioning

confidence: 99%

“…Therefore, the MMPA is a great candidate to detect materials that have close RI values [6]. The sensitivity of the RI is strongly influenced by local electric fields and the interaction of hot spots with the material which intend to sense [16], [32]. Therefore, MMPAs are very suitable for detecting the RI of materials.…”

Section: Introductionmentioning

confidence: 99%

The Potential of Refractive Index Nanobiosensing Using a Multi-Band Optically Tuned Perfect Light Metamaterial Absorber

et al. 2021

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“…More recently, further theoretical studies on PT effect on LWIR HgCdTe detectors with reduced absorption volume have been presented [88,89], including the proposal of a PT structure that exploits the skin effect of metals to generate horizontal local modes to enhance the absorption of IR photodiodes [90].…”

Section: Trapping Photodetectorsmentioning

confidence: 99%

Scaling infrared detectors—status and outlook

Rogalski

2022

Rep. Prog. Phys.

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The predicted “Law 19” benchmark for HgCdTe photodiode performance established in 2019 is a milestone in the development of infrared detectors and make the dream of Elliott and colleagues, who in 1999 wrote that there is no fundamental obstacle to obtaining room temperature operation of photon detectors at room temperature with background-limited performance even in reduced fields of view [C.T. Elliott et al., Appl. Phys. Lett. 74(9), 2881 (1999)]. This circumstance will make it possible to achieve in the near future the room-temperature infrared (IR) arrays operation with high pixel density (small pixels) fully compatible with the background and diffraction-limited performance resulting from the system optics. The advent of smaller pixels also results in superior spatial and temperature resolutions of imaging systems. In megapixel imaging systems, the pixel dimension plays a crucial role in determining critical system attributes such as system size, weight, and power consumption (SWaP). In the paper, the physical limitations of pixel size related to the aperture of the optics, which in turn is wavelength dependent, are described. Since the critical parameter of small pixels is quantum efficiency, more attention has been paid to enhancing the coupling of radiation to the detector. Then, the evaluation for assessing the figure-of-merit of different material systems (especially short wavelength IR colloidal quantum dots, both medium and long wavelength IR novel III-V material systems) relative to bulk HgCdTe alloys is considered. Of the various thermal detectors, particular attention has been focused on bolometer arrays due to their largest share of the global commercial market. Also key challenges in realizing ultimate pixel dimensions in focal plane arrays (FPAs) design are presented for different material systems including dark current, pixel hybridization, pixel delineation, and unit cell readout capacity.

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“…Through design and improvement, absorption layers enhanced the sensing efficiency of thermal radiation in the above researches with the features as follows: (i) high absorption efficiency and uniform absorption spectrum, (ii) low heat capacity, (iii) high thermal conductivity, (iv) long-term stability and reproducibility and (v) deposition process of material compatible with the processes of fabrication of the element [ 17 , 18 , 19 , 20 , 21 , 22 ]. It highlights the main characteristics to be considered for the development of IR thermal radiation-sensing thin films.…”

Section: Introductionmentioning

confidence: 99%

Research on a CMOS-MEMS Infrared Sensor with Reduced Graphene Oxide

Chen

2020

Sensors

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In this research, a new application of reduced graphene oxide (rGO) for a complementary metal-oxide-semiconductor (CMOS)-MEMS infrared (IR) sensor and emitter is proposed. Thorough investigations of IR properties including absorption and emission were proceeded with careful calibration and measurement with a CMOS thermoelectric sensor. The thermocouples of the sensor consist of aluminum and n-polysilicon layers which are fabricated with the TSMC 0.35 μm CMOS process and MEMS post-process. In order to improve the adhesion of rGO, a sensing area at the center of the membrane is formed with an array of holes, which is easy for the drop-coating of rGO material upon the sensing region. To evaluate the performance of the IR sensor with rGO, different conditions of the IR thermal radiation experiments were arranged. The results show that the responsivity of our proposed CMOS-MEMS IR sensor with rGO increases by about 77% compared with the sensor without rGO. For different IR absorption incident angles, the measurement of field of view shows that the CMOS-MEMS IR sensor with rGO has a smaller view angle, which can be applied for the application of long-distance measuring. In addition, characteristics of the proposed thermopile are estimated and analyzed with comparisons to the available commercial sensors by the experiments.

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Ultra-thin super absorbing photon trapping materials for high-performance infrared detection

Cited by 6 publications

References 20 publications

The Potential of Refractive Index Nanobiosensing Using a Multi-Band Optically Tuned Perfect Light Metamaterial Absorber

The Potential of Refractive Index Nanobiosensing Using a Multi-Band Optically Tuned Perfect Light Metamaterial Absorber

Scaling infrared detectors—status and outlook

Research on a CMOS-MEMS Infrared Sensor with Reduced Graphene Oxide

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