New organic LED breaks through data speed
2020-07-28
Yin Te Electronics: Industry Push
Researchers are using a new type of organic LED to break through the limits of data speed.
The domain provides' practically 'unlimited bandwidth (>400 THz). Among these systems, visible light communication (VLC) is attractive because it has the potential to utilize light-emitting devices that have been widely used in commercial applications ranging from lighting systems to mobile phones and television displays.
In the fastest VLC link reported so far, the light emitter consists of a light emitting diode (LED) and a laser diode (LD), which use inorganic semiconductors (usually gallium nitride) as the emission medium and have high light output power and wide bandwidth. These characteristics make inorganic LEDs and LDs suitable for integration into dual-purpose lighting devices that can provide both white lighting and data transmission simultaneously. However, the use of organic light-emitting diodes (OLEDs) is an effective alternative, which has attracted great attention for VLC. People's interest in OLEDs used for communication is not only driven by their widespread use in display technology, but also by the same advantages of successful organic electronics technology. Importantly, organic semiconductors can be deposited over large areas inexpensively through thermal evaporation or spin coating, scraping, inkjet, or spray coating solutions. Large area organic semiconductor (OS) lighting devices have entered the market and are expected to become the next large-scale application of OS after OLED (AMOLED) displays.
Visible light communication (VLC) is a wireless technology that relies on light intensity modulation and may change the connectivity of the Internet of Things (IoT). However, the low penetration depth of visible light in non transparent media hinders VLC. One solution is to extend the operation to the "near (non) visible" near-infrared (NIR, 700-1000nm) region, extending the spectral range to the near-infrared (NIR, 700-1000nm) not only expands the bandwidth of the VLC link, but also paves the way for its integration into many applications that utilize NIR radiation. Near infrared emission devices are used in several different fields, including safety, biological detection, and photodynamic/photothermal therapy, both of which benefit from the semi transparency of biological tissues in this spectral window. In the case of wearable or implantable biosensors, NIR photons can be used to monitor human vital signs and communicate wirelessly with other devices.
Scientists have created new OLEDs processed with far red/near-infrared solutions. By integrating the device into a real-time VLC device, as shown in Figure 1a, an error free transmission speed of over 1Mb/s has been achieved. Successfully expanded bandwidth and achieved the fastest data speed ever for organic light-emitting diodes.
The new OLED has been described in the journal "Light Science and Applications", creating opportunities for new Internet of Things (IoT) connectivity and wearable and implantable biosensor technologies.
This project is a collaboration between Newcastle University, University College London, London Centre for Nanotechnology, Institute of Organic Chemistry of the Polish Academy of Sciences (Warsaw, Poland), and National Research Council Institute for Nanostructured Materials (CNR-ISMN, Bologna, Italy).
From the perspective of IoT applications, the data rate achieved by the team through this groundbreaking device is sufficient to support indoor point-to-point links.
The researchers emphasized the possibility of achieving this data rate without the need for computationally complex and power demanding equalizers. Due to the absence of toxic heavy metals in the active layer of organic light-emitting diodes, the new VLC device is expected to integrate portable, wearable, or implantable organic biosensors.
What is 5G and in what ways can we contribute to its development?
2020-04-10
5th generation mobile networks or 5th generation wireless systems, abbreviated as 5G or 5G technology)
It is the latest generation of cellular mobile communication technology, which is an extension of 4G (LTE-A, WiMax), 3G (UMTS, LTE), and 2G (GSM) systems. The performance goals of 5G are high data rates, reduced latency, energy savings, cost reduction, increased system capacity, and large-scale device connectivity. The first phase of the 5G specification in Release 15 was designed to accommodate early commercial deployments. The second phase of Release 16 will be completed in April 2020 and submitted as a candidate for IMT-2020 technology to the International Telecommunication Union (ITU). The ITU IMT-2020 specification requires a speed of up to 20 Gbit/s, which can achieve wide channel bandwidth and large capacity MIMO
ITU is the International Telecommunication Union
The International Telecommunication Union is a United Nations agency responsible for information and communication technology affairs, allocating and managing global radio spectrum and satellite orbit resources, developing global telecommunications standards, providing telecommunications assistance to developing countries, and promoting global telecommunications development.
Chen Zhaoxiong presides over a special meeting on accelerating the development of 5G (Ministry of Industry and Information Technology)
2020-03-15
On March 6, 2020, the Ministry of Industry and Information Technology held a special meeting on accelerating the development of 5G, deeply studying and implementing the important speech of General Secretary Xi Jinping on promoting the accelerated development of 5G networks, listening to the progress, difficulties and suggestions of 5G work in basic telecommunications enterprises, studying and deploying new infrastructure construction such as 5G networks, and serving epidemic prevention and control and economic and social development work. Chen Zhaoxiong, Deputy Minister of Industry and Information Technology, attended the meeting. Ke Ruiwen, Chairman of China Telecom, Yang Jie, Chairman of China Mobile, Wang Xiaochu, Chairman of China Unicom, Tong Jilu, Chairman of China Tower, and Song Qizhu, Chairman of China Radio and Television, attended the meeting.
Chen Zhaoxiong fully affirmed the contributions made by basic telecommunications enterprises during the epidemic prevention and control period in promoting the construction and application of 5G networks, strengthening communication service guarantees and communication big data support services for epidemic prevention and control, using new generation information and communication technology to assist in resuming work and production, and suspending classes and schools.
Chen Zhaoxiong pointed out that 5G, as a key new infrastructure supporting the digital, networked, and intelligent transformation of the economy and society, not only plays a prominent role in assisting epidemic prevention and control, resumption of work and production, but also has enormous potential in stabilizing investment, promoting consumption, assisting upgrading, and cultivating new driving forces for economic development. We should focus on the complexity of the current situation of epidemic prevention and control and economic and social development, fully recognize the importance and urgency of accelerating the development of 5G, scientifically grasp the new situation and requirements faced by 5G development, and pragmatically promote the accelerated development of 5G. One is to accelerate network construction, coordinate epidemic prevention and control with resumption of work and production, conscientiously implement precise prevention and control requirements at different levels, and accelerate the pace of 5G network construction. The second is to deepen the integration of applications, enrich the application scenarios of 5G technology, develop a platform economy based on 5G, drive the development of industries such as 5G terminal equipment, and cultivate new economic growth points. The third is to strengthen the industrial ecosystem, enhance the coordinated development of upstream and downstream enterprises in the industrial chain, accelerate the research and development of key 5G core technologies, expand international cooperation and exchanges, and continuously improve the level of 5G security assurance.
Before the meeting, Chen Zhaoxiong and his delegation conducted research on the support of China Telecom's 5G, big data, and information technology applications for epidemic prevention and control, as well as resumption of work and production. The meeting also studied the support services of communication big data for epidemic prevention and control, number portability, network security, and other related work.
Comrades from the General Office of the Ministry of Industry and Information Technology, the Department of Information Technology Development, the Department of Information and Communication Development, the Information and Communication Management Bureau, the Network Security Management Bureau, and the China Academy of Information and Communications Technology participated.
Information source: Ministry of Industry and Information Technology
5G involves audio products such as transient suppression diodes, ESD protection modules, and self recovery fuses
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