作者：Blade

Near-infrared perovskite LED external quantum efficiency exceeds 20%

The team led by Professor Huang Wei, the chief scientist of the Institute of Flexible Electronics of Northwestern Polytechnical University, and the academician of the Chinese Academy of Sciences, and Professor Wang Jianpu, the executive vice president of the Advanced Materials Research Institute of Nanjing University of Technology, used the low-temperature solution method to design the perovskite luminescent layer. A new idea was put forward to increase the external quantum efficiency of near-infrared perovskite LEDs to 20.7%, which set a new world record. The relevant research results were published in Nature on October 11.

Near-infrared perovskite LED external quantum efficiency exceeds 20%

LED is a kind of semiconductor electronic component that can convert electrical energy into light energy. It has the characteristics of energy saving, environmental protection, safety, and high brightness, and has been widely used in daily life and production. The perovskite light-emitting diodes that have emerged in recent years have the advantages of inorganic LEDs and organic light-emitting diodes (OLEDs) and have broad application prospects in the fields of low energy consumption, high brightness, large size display, and illumination. In 2016, the research team proposed a perovskite dimensional regulation to create a record of perovskite light-emitting diode (LED) efficiency.

For many scientists who have been engaged in perovskite LED research for a long time, only the perovskite film with flatness, high coverage, and no obvious holes is the basis for realizing high-efficiency devices. The research team’s research paper entitled “Spontaneously Forming Submicron Structured Perovskite Light Emitting Diodes” published in Nature has not only broken this view but also reported the world’s highest perovskite LED. External quantum efficiency. Professor Wang Jianpu said that they found that when the perovskite grains are like mahjong tiles, they are not connected and irregularly distributed on the surface of the substrate, the near-infrared perovskite luminescence with an external quantum efficiency of 20.7% can be obtained. The diodes have increased by nearly eight percentage points compared to the 13% external quantum efficiency obtained by international counterparts, the device irradiance reaches 390 W sr-1 m-2, and continues to operate at a current density of 100 mA cm-2. After half an hour, the efficiency is reduced by half, and the performance far exceeds the current popular OLEDs with similar illumination bands.

According to Academician Huang Wei, the team also cooperated with the group of Professor Tian He and Professor Dai Dao Zinc of Zhejiang University to find that the perovskite luminescent layer is composed of dispersed perovskite crystal grains and embedded in the crystal grains. The refractive index organic insulating layer is produced, and the structure can further form a high and low undulating pleat structure of the device top electrode, thereby effectively improving the light extraction efficiency of the device. This achievement has essential theoretical and practical significance for the development and application of perovskite LED and provided a new way of thinking and ways to promote the industrialization of perovskite LED further. “

Solar Power Motion Sensor LED Courtyard Corridor Light

Solar Power Motion Sensor LED Courtyard Corridor Light

Solar Power Motion Sensor LED Courtyard Corridor Light is really an energy-saving and environmentally friendly item which is popularly accepted by more and more people. We sincerely recommend this item for its excellent lighting function as well as its competitive price. This is a sort of sensor light, perfectly installed in the corridor or around the garden.

Solar Power Motion Sensor LED Courtyard Corridor Light Specification:

Solar Panel 5.5V 0.55W, 17% Efficiency
Li-ion Battery 3.7V 800mAh
LED 0.8W, 20Pcs 2835 SMD LED
Lumens 80LM
Waterproof IP67
LED Lifespan 50,000 hours
Solar Charging Time 8 hours
Lighting Mode Dark/ DIM/ Bright
Protect Function over Charging, over Discharging, over Current, Short Circuit
Li-ion Battery Span Life 500 Circles
Solar Panel Span Life More Than 5 Years
Material Plastic
Color Black
Dimensions (4.72 x 3.54 x 1.97)” / (12 x 9 x 5)cm (L x W x H)
Weight 7.05oz / 200g

Solar Power Motion Sensor LED Courtyard Corridor Light Features:

  • Low consumption, environmentally friendly and energy-saving
  • Energy saving, long service life
  • Easy installation, you just have to mount the light on the wall with the included screws
  • Good convenience and flexibility
  • Infrared induction of human movement
  • Contribute to a safer environment
  • Suitable for the courtyard, municipal construction, park, villa, residential area, indoor

120LED PIR Motion Sensor Solar Power Flood Garden Light

120LED PIR Motion Sensor Solar Power Flood Garden Light

120LED PIR Motion Sensor Solar Power Flood Garden Light will provide reliable lighting to your garage, drive way, shed or remote areas where no electricity is available. It features Ultra Bright SMD LEDs in a weatherproof PVC plastic casing. Simply choose a location you desire to mount the solar panel and light with the included mounting hardware to be done within minutes. The solar panel captures energy during the day and charges the Pre-Installed 3.7V Lithium battery.

120LED PIR Motion Sensor Solar Power Flood Garden Light Specification:

Name Solar Power Wall Light
Voltage 9V
Body Material ABS
Light Source LED
Protection Level IP65
Battery 1 x 400mAh Li-ion Battery
Continuous Lighting Time 4.5h
Install Height 1- 3m
The Delay Time (adjustable) 4 to 6 seconds (the shortest.), 120 seconds (max.)
Induction Distance 8-12 meters max
Sensing Range 120 °
Solar Panel Lead Length 5M

120LED PIR Motion Sensor Solar Power Flood Garden Light Features:

  • Sensor: Motion Sensor, activates the light when motion is detected
  • LED: 120 Bright White SMD LEDs, last up to 100,000 hours
  • Solar Panel: New and IMPROVED Amorphous Solar Panel for Superior Charging Performance
  • Exterior Material: Anti-Heat ABS
  • Waterproof: IP65 Protection Level, Safe and waterproof with CE Certified SMD LEDs
  • Lux: Determines how dark to turn on the light
  • Time: Controls the duration of each light cycle
  • Sens: Controls the sensitivity of the motion sensor
  • In the night, the light will be strong bright when people come, Adjust the activated lighting time, the light dies automatically.

LED lighting products tax rebate will increase by 200 million US dollars annually

Ministry of Finance News: To improve the export tax rebate policy, the VAT export tax rebate rate will be increased for products such as electromechanical and cultural. Details as follows:

LED lighting products tax rebate will increase by 200 million US dollars annually

1. Increase the export tax rebate rate for multi-component integrated circuits, non-electromagnetic interference filters, books, newspapers, and other products to 16%.

The export tax rebate rate for bamboo carvings, wood fans, and other products will be increased to 13%.

The export tax rebate rate for basalt fiber and its products, safety pins and other products will be increased to 9%.

2. The notice shall be implemented from September 15, 2018. The export tax rebate rate applicable to the goods listed in the notification is defined by the export date indicated on the export goods declaration form.

Impact on the LED lighting industry:

The most significant change in effects is the 85395000 light-emitting diodes (LED) bulb (tube), mainly for alternative light source products, the tax rebate rate increased from 13% to 16%. According to the China Lighting Association, the export value of the first half of the year was about 3 billion US dollars. According to this estimate, the annual tax rebate will increase by approximately 200 million US dollars. For reference, in 2017 China’s LED lighting exports amounted to 21 billion US dollars.

It should also be noted that “85395000” is not included in the US tax increase list.

Solar Power Outdoor Camping 22-LED Tent Light

Solar Power Outdoor Camping 22-LED Tent Light

Solar Power Outdoor Camping 22-LED Tent Light is really an energy-saving and environmentally friendly item which is popularly accepted by more and more people. We sincerely recommend this item for its excellent lighting function as well as its competitive price. Built with 22pcs LEDs, it can give out highly bright light for lighting your directions.

Solar Power Outdoor Camping 22-LED Tent Light Specification:

Solar Panel 3.7V/ 1W
Battery Capacity 1000MAH
Light Source 22 Highlight LED
Color White
Material ABS & Acrylic
Charging Time 10 hours Direct Sunlight Solar Panels
Working Time Full charge 4 to 7 hours
Modes 22 Brightly / Second Gear 14 Bright / Three 8 Bright
Weight 5.29oz / 150g
Dimensions (5.12 x 3.94 x 3.94)” / (13 x 10 x 10)cm (L x W x H)

Solar Power Outdoor Camping 22-LED Tent Light Features:

  • New design, powered by solar energy, no electrical outlet required
  • Crafted from premium ABS and acrylic materials for excellent quality
  • 22pcs ultra-bright white LEDs with PIR motion sensor
  • Come with a remote controller for convenience
  • Widely applied to lawn, yard, garden and so on

Taoyuan refits LED street lights to save more than 70%

Lin Kun, Director of Delta Lighting Division, said that Delta has installed high-efficiency LED street lamps for counties and cities in the past ten years. In addition to providing high-quality lighting, Delta enjoys energy-saving benefits. In particular, intelligent LED street lights are highly expandable. In the future, electric vehicle chargers, environmental monitors, video surveillance, information billboards, etc. can be added according to requirements. Through the IoT Internet of Things, high efficiency, data collection, and multiple services will be developed. One of the most important infrastructures.

Taoyuan refits LED street lights to save more than 70%

Delta has installed nearly 13,000 LED street lights for Taoyuan, of which about 6,500 are intelligently controlled. Through the remote monitoring, maintenance management and lighting control functions of Delta’s LED intelligent streetlight management platform, Compared with traditional mercury lamp lamps, it can save more than 70% energy, and the annual electricity saving is nearly NT$18 million, about 4 million yuan. In addition, the 20,000-inch LED smart street light installed in Jakarta is also equipped with a smart streetlight management platform, which is expected to save at least 48% of electricity per year compared to the traditional high-pressure sodium lamps used.

In addition to intelligent lighting, Delta’s innovative technologies such as building automation, electric vehicle charging, energy storage, and renewable energy are also key foundations to help build smart cities, especially in the field of building automation. Comprehensively strengthen soft power, from equipment to information analysis management, intelligent cross-platform integration and control, achieve efficient building management, and connect other energy infrastructure solutions to better assist the overall planning and transformation of smart cities.

2W Wall Oval Body Sensor Light

2W Wall Oval Body Sensor Light

2W Wall Oval Body Sensor Light is a smart, delicate and durable lamp for daily use. The most outstanding feature of this wall lamp is the powerful body sensor and light control design, which makes it more convenient than ordinary ones. Its high-grade material, as well as fine treatment, endows the lamp with long service time and great brightness.

2W Wall Oval Body Sensor Light Specification:

Material ABS
Color Black
Dimensions (6.69 x 8.27 x 2.76)” / (17 x 21 x 7)cm (L x W x H)
Weight 17.64oz / 500g
Light Color White
Power 2W
Input Voltage 3.7 V
Sensor Way Human Body Sensor & Light Control / off
Brightness 300LM
Color Temperature 6500K
Duration 12 h or so

2W Wall Oval Body Sensor Light Features:

  • 3 in 1 lighting mode
  • Support human body induction and light control
  • Solid material and fine workmanship ensure the excellent performance and durability
  • Small size, oval shape, easy to install
  • Ideal for home, office, bars, clubs and so on

India’s LED street light project construction will set a world record

According to Indian media reports, India’s Andhra Pradesh Chief Minister N. Chandrababu Naidu set a goal to create a world record in smart street lighting projects and has instructed officials to take steps to launch the Alert Management System (AMS). The AMS system is a global standard delivery mechanism for handling complaints related to LED street lights and giving equal weight to the implementation and maintenance of LED street lights.

India's LED street light project construction will set a world record

According to Indian officials, the AMS system will ensure responsibility among relevant government departments and build confidence in the public so that their complaints can be effectively processed and resolved within the stipulated time, which is the first in India.

Andhra Pradesh Chief Minister N. Chandrababu Naidu said in a conference call that Andhra Pradesh has created a record in India on the LED streetlight project, and the state should focus on achieving world records. He said, “The Gram panchayat LED streetlight project will be the best large rural LED project in the world.”

Currently, the first phase of the LED streetlight project is nearing completion, and the Chief Minister instructs officials that the entire project must be completed by the end of December.

He said, “Our first priority is to satisfy the people and strive to ensure that the satisfaction of the LED streetlight project reaches 100%. The state government has been committed to building infrastructure and providing modern facilities in rural areas.”

It is reported that India Energy Efficiency Services Co., Ltd. (EESL) has installed 1 million LED lamps in the first phase and is preparing to install 1.3 million LED lamps in the second phase. So far, 1.592 million LED street lights have been installed in rural and urban areas, accounting for about a quarter of India’s national LED street lights.’’

12 Patterns LED Spot Light Projector Stage Light

12 Patterns LED Spot Light Projector Stage Light

12 Patterns LED Spot Light Projector Stage Light is widely used in various occasions, the projector stage light can create festival atmospheres in the wedding ceremony, Halloween party, banquet and holiday, etc. It offers great joy and fun to both children and adult. It comes with different patterns to produce amazing light effects.

12 Patterns LED Spot Light Projector Stage Light Specification:

Color Black
LED/Power 4 x 3W
Waterproof Grade IP65
Plug US Plug
Voltage AC110-220V
Material ABS Plastic
Operating Temperature Range -25-32 Degrees, 2-15 Minutes Low-Temperature Preheating Start

12 Patterns LED Spot Light Projector Stage Light Features:

  • Made of high-quality ABS plastic, waterproof, durable to use
  • Widely used in various occasions, like wedding and party
  • Come with different patterns to produce amazing light effects
  • Offer the great joy and fun to both children and adult
  • 12 patterns included, best for Christmas, Halloween decoration

LED replaces high pressure sodium lamp to promote plant growth

An Italian basil (a kind of vanilla for seasoning) growers chose to replace high-pressure sodium lamps with LEDs and found that it can promote plant growth while reducing farm energy consumption.

LED replaces high pressure sodium lamp to promote plant growth

The grower is located in Reggio, the southern part of Italy, and produces basil for salads, pasta, and other dishes. He has been using high-pressure sodium lamps in his greenhouse.

In order to avoid typical basil disease, growers use artificial light for several hours per day in the greenhouse, which increases costs.

Red, super red and blue LED lights are used in different proportions in the greenhouse. This mode speeds up the growth of basil, reduces harvest time by 5 days, and increases crop yield.

The grower manager Marco Boselli said, “We are worried about bacterial proliferation because Peronospora fungi have been eradicated by the heat generated by HPS lighting, but after using LEDs, we have not encountered any problems.”

“We can also observe that our basil grows better and faster because the proportion of blue light is lower, the ratio in the LED solution is 5%, compared to 24% in the previous HPS program.”

Sebastian Psychic, global project manager for OSRAM Optoelectronics, said: “Durable, energy-efficient and long-lasting LED technology is becoming more and more popular and will replace standard horticultural lighting one day.”