Enhanced broadband photoresponse of substrate-free reduced graphene oxide photodetectors

Tian, Hua; Cao, Yang; Sun, Jia‐Lin; He, Junhui

doi:10.1039/c7ra09826j

Cited by 24 publications

(16 citation statements)

References 48 publications

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“…Based on these results, the highest responsivity of the pRGO‐1 paper is 125 mA W −1 which is comparable to that of commercial UV sensor (≈140–170 mA W −1 ) and other RGO films (≈20–330 mA W −1 ), and also higher than that of our previous reported flexible/wearable UV sensors (≈1.3–2.5 mA W −1 ) ( Table 1 ). [ 20,21,27–30 ]…”

Section: Resultsmentioning

confidence: 99%

“…[15][16][17] In particular, porous RGO (pRGO) materials including foams, textiles, papers are most promising photosensing materials owing to high specific surface area for light absorption. [18][19][20][21] Several pRGO based wearable UVA sensors have shown impressive performances, but they fail to interface with silicon-based electronic components for the realization of fully functional wearable system. Furthermore, the performance of wearable sensor is affected by many environmental factors, such as relative humidity, temperature, various motion noises.…”

Section: Introductionmentioning

confidence: 99%

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A Wearable Patch Based on Flexible Porous Reduced Graphene Oxide Paper Sensor for Real‐Time and Continuous Ultraviolet Radiation Monitoring

Lee

Hong

Yang

et al. 2021

Adv Materials Technologies

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Real‐time and continuous monitoring of ultraviolet (UV) radiation in daily activity is critical in diverse fields ranging from personal fitness, cosmetics, to medical aspects. Here, a wearable UV monitoring patch that can be easily fixed/removed at desired locations and provide real‐time and continuous UVA levels in daily life is developed. The wearable patch consists of a highly sensitive, flexible graphene sensor for UVA measurement and a multifunctional fabric patch integrated with commercial electronic components for signal processing, wireless transmission. To achieve a high sensitive UVA sensor with high flexibility and long‐term stability, porous reduced graphene oxide (pRGO) papers are fabricated by simple solvent evaporation followed by thermochemical reduction. The flexible UVA sensors based on pRGO papers feature a high UVA photoresponsivity of 125 mA W−1, which is comparable to that of a commercial silicon‐based UV sensor. Furthermore, the polydimethylsiloxane‐encapsulated pRGO (PDMS‐pRGO) sensors exhibit stable UVA photoresponse characteristics that is maintained under severe conditions, such as a large number of bending cycles, thermal heating, and high humidity. The use of wearable patches that enable real‐time, wireless monitoring of personal UVA levels in various practical applications are demonstrated.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Wearable Patch Based on Flexible Porous Reduced Graphene Oxide Paper Sensor for Real‐Time and Continuous Ultraviolet Radiation Monitoring

Lee

Hong

Yang

et al. 2021

Adv Materials Technologies

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“…Nevertheless, the reduction of GO is a more scalable and cost-effective approach for mass production of graphene-like materials as compared with the traditional mechanical and vacuum-based preparation methods, enabling many PDs based on rGO. [189][190][191][192][193][194][195][196][197][198][199][200][201][202] Moreover, rGO also has its own advantages such as high flexibility in engineering its material properties and great compatibility with a variety of substrates.…”

Section: Photodetectors (Pds)mentioning

confidence: 99%

Graphene Oxide for Integrated Photonics and Flat Optics

et al. 2020

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With superior optical properties, high flexibility in engineering its material properties, and strong capability for large‐scale on‐chip integration, graphene oxide (GO) is an attractive solution for on‐chip integration of 2D materials to implement functional integrated photonic devices capable of new features. Over the past decade, integrated GO photonics, representing an innovative merging of integrated photonic devices and thin GO films, has experienced significant development, leading to a surge in many applications covering almost every field of optical sciences such as photovoltaics, optical imaging, sensing, nonlinear optics, and light emitting. This paper reviews the recent advances in this emerging field, providing an overview of the optical properties of GO as well as methods for the on‐chip integration of GO. The main achievements made in GO hybrid integrated photonic devices for diverse applications are summarized. The open challenges as well as the potential for future improvement are also discussed.

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“…Since pristine GO is a dielectric with low electronic conductivity and light absorption, it cannot be directly used for photo detection. Nevertheless, the reduction of GO is a more scalable and cost-effective approach for mass production of graphene-like materials as compared with the traditional mechanical and vacuum-based preparation methods, enabling many PDs based on rGO [171][172][173][174][175][176][177][178][179][180][181][182][183][184]. Moreover, rGO also has its own advantages such as high flexibility in engineering its material properties and great compatibility with a variety of substrates.…”

Section: Photodetectors (Pds)mentioning

confidence: 99%

Graphene oxide films for advanced ultra-flat optical devices and photonic integrated circuits

Moss¹

2020

Preprint

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With superior optical properties, high flexibility in engineering its material properties, and strong capability for large-scale on-chip integration, graphene oxide (GO) is an attractive solution for on-chip integration of two-dimensional (2D) materials to implement functional integrated photonic devices capable of new features. Over the past decade, integrated GO photonics, representing an innovative merging of integrated photonic devices and thin GO films, has experienced significant development, leading to a surge in many applications covering almost every field of optical sciences. This paper reviews the recent advances in this emerging field, providing an overview of the optical properties of GO as well as methods for the on-chip integration of GO. The main achievements made in GO hybrid integrated photonic devices for diverse applications are summarized. The open challenges as well as the potential for future improvement are also discussed.

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Enhanced broadband photoresponse of substrate-free reduced graphene oxide photodetectors

Abstract: Broadband responsivity enhancement of substrate-free device is achieved from the ultraviolet to near-infrared range just by removing the substrate of rGO film device.

Cited by 24 publications

References 48 publications

A Wearable Patch Based on Flexible Porous Reduced Graphene Oxide Paper Sensor for Real‐Time and Continuous Ultraviolet Radiation Monitoring

A Wearable Patch Based on Flexible Porous Reduced Graphene Oxide Paper Sensor for Real‐Time and Continuous Ultraviolet Radiation Monitoring

Graphene Oxide for Integrated Photonics and Flat Optics

Graphene oxide films for advanced ultra-flat optical devices and photonic integrated circuits

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