Emerging Trends in 2D Flexible Electronics

Abstract

Potential for integrated flexible electronics has been shown for 2D materials with atomically thin layers and dangling‐bond‐free surfaces. Strain engineering is a fascinating technique for tuning or controlling the electronic and optical properties of 2D materials. In the review article, an effort to condense the most recent and promising approaches that can be used to create flexible nanoelectronic and optoelectronic devices in the future and expand their range of useful applications is made. In order to investigate their electrical behavior, the majority of the devices are created using chemical vapor deposition (CVD) or mechanical exfoliation of ultrathin 2D TMD materials. This makes it possible to develop flexible piezo‐phototronic photodetectors, self‐powered sensors, and wearable and implantable devices with higher strain tolerance. On the basis of 2D TMDs materials, a comparison of the performance and characteristics of 2D flexible electronic devices is also carried out. In order to advance the development of wearable and implantable electronics with greater strain tolerance for health monitoring and usher in a new era of flexible technologies, this overview of recent research on 2D flexible electronics based on nanomaterials is intended to aid in the advancement of the field. Finally, it summarizes the current challenges and opportunities.

Progress in photodetector devices utilizing transition metal dichalcogenides

“…Photodetectors (PDs) that convert light energy into electrical signals are one of the major components in advanced multifunctional technologies. [1][2][3][4][5][6] The developed PD technologies have so far covered a wide range of applications that have a significant impact on our daily lives such as visible light detection for video imaging and digital cameras, ultraviolet (UV) radiation for cell inspection and lithography, X-ray radiation for biomedical imaging, wide-range infrared (IR) detection for night vision, environmental monitoring, optical communication, and quality testing spectroscopy, among others. [7][8][9][10][11][12][13][14][15][16][17][18][19][20] PDs are categorized using several key figures-of-merit such as photogain, quantum efficiency, detectivity, responsivity and others.…”

“…While developing a new device is not too difficult, it can be difficult to optimize its structure and film morphology in order to maximize its performance. Furthermore, there are few opportunities for large-scale integrations because the majority of TMD research has been done with mechanically exfoliated flakes (<1 mm 2 ). According to Ryu, Hyeyoon et al , 193 a PD's performance can be greatly improved by using a number of unique techniques.…”

Advanced Wearable Sensing Technologies for Sustainable Precision Agriculture – a Review on Chemical Sensors

“…However, due to its yellow color, PI is limited to applications requiring optical transparency. [ 30 ] Other polymers, such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), showed higher transparency but suffered from lower thermal stability and poor stretchability. [ 31 ] Polydimethylsiloxane (PDMS), on the other hand, is widely employed as a substrate because of its excellent processability, high intrinsic stretchability, and nonchemical reactivity.…”

Skin‐Inspired Ultrafast Self‐Healing Wearable Patch with Hybrid Cooling for Comfortable and Durable Electromyographic Monitoring

“…Electronic skins can detect numerous physiological and physical signals, exhibiting their great potential as platforms for personal healthcare, soft robotics, behavior monitoring, and human-machine interaction. [1][2][3][4][5][6][7][8] Ideally, electronic skin should closely mimic natural skin. [9][10][11] As the body's largest organ, the skin is an integrated multisensory system with a self-healing ability that helps stabilize body temperature.…”