Organic photovoltaic cells (OPV) have outstanding advantages such as light weight, simple manufacturing process, and large-area flexible devices that can be prepared by low-cost printing processes, and show broad application prospects. With the substantial improvement of photovoltaic efficiency, the OPV field has developed to a critical stage of transformation from laboratory to industrialization. How to further promote the improvement of photovoltaic efficiency, and at the same time to solve the key problems faced in the preparation of large areas is the focus of current research.
With the support of the Beijing National Research Center for Molecular Sciences, the National Natural Science Foundation of China, and the Ministry of Science and Technology, the team of Hou Jianhui from the Laboratory of Polymer Physics and Chemistry of the Institute of Chemistry, Chinese Academy of Sciences conducted a series of studies on the preparation of key materials and devices for large-area OPV batteries. For the large-area processing technology, the active layer and the interface layer (Adv. Mater. 2018, 30, 1704837; Adv. Mater. 2019, 31; 1903441; Joule 2019, 3, 1) were studied for the photovoltaic performance. As a result, the cells prepared by coating printing have achieved excellent photovoltaic efficiency (Adv. Mater. 2019, 31, 1808356).
Recently, based on the combination of polymer donor material PBDB-T-2Cl and the new non-fullerene acceptor Y6, the team achieved a photovoltaic efficiency of 14.3% in a 300 nm active layer thickness cell (Sci. China Chem. 2020, 63, 21), which proves that the system has good film thickness tolerance, which is very beneficial for large-area coating processing. By further modifying the acceptor material and optimizing the alkyl chain, the researchers prepared BTP-4Cl-12 with lower energy loss and good processing performance; based on this material, the team used a spin coating method to prepare a small area ( 0.09 cm2) The battery achieves a photovoltaic efficiency of up to 17%. The 1 cm2 battery prepared by the doctor blade coating method can still maintain 15.5% PCE, which is the highest result achieved by the same large area OPV battery, and has initially proved the application potential of this type of high-efficiency material system. The related research work was published in the recent National Science Review. The corresponding author is Yao Huifeng and the first author is Cui Yong.
Figure: (a) Schematic diagram of blade coating; (b) Comparison of photovoltaic efficiency of cells.
About High Speed Door Accessories:
1.Driving system: High Speed Door Servo System motor and control, motor SNMA / SEJ +reducer+flang+encoder+control box
2.Other accessories: Middle aluminium bar, bottom aluminium bar, aluminium vertical track, stainless steel vertical track, brushes,round nylon strip, PVC roll, rolling steel tube complete, drum be;;s for rolling tube, side end covers, stainless steel cover, steel tubes, air bag sensor system, safety light beam, Microwave sensor 24 Gigahertz,PVC welding machine, smoke and fire sensors, PVC transparent window, magnetic loop, photocell, remote control, manual push button, sound warning alarm Led lamp traffic light
For some main accessories, here is detain introduction:
1).24G radar sensor:
Brand: Hofic
Technology: Microwave processor
Maintain time: 0.5s
Protection: IP54
Transmitting frequency: 24.125GHz
Maximum installation height: <5meter
Transmitting power density: <5mw/cm2
Power consumption: <1W(VA)
Installation angle: 0-90°(lengthways) -30-30°(crosswise)
Supply voltage: AC&DC 12V-30V
2).Photocell:
Approval CE & ISO9001
Power supply AC/DC 12-30V
Static current 25A
Action current 40mA
Mounting distance Max 10m
NO or NC contact Done by NO./NC. contact selection
Working environment temperature -42℃ to +45℃
Working environment humidity 10 to 90%RH
Appearance dimensions( controller) 123*50*32mm(L*W*H)
Appearance dimensions(Magic eye head) 19*13mm(L*D)
3). Remote control
Operating Voltage: AC220V/50HZ+-20%
Transmit power:≤100mW;Super regenerative module, strong anti-interference
Operating temperature:-30℃-+70℃
Working frequency: 433MHZ;transmitter 1527, millions of encoding chip
Accept sensitivity:≤110dB
Manipulation method: electric remote control
Configure the quantity: Wireless number; factory configuration transmitter two. Can be equipped with PT2272 digital decoder chip
Configure the function: Up, down, stop, anti-lock full-featured reproduction
4). Magnetic loop
Voltage: 12V AC/DC +-10% 24V 115V AC+-10% 230V
Power: <2VA
Continued electrical output: 7A / 250V AC
Frequency range: 20 to 200K Hz
Response time: infinity (factory setting) or adjust maintain time
Sensitivity: 0.01% to 0.1% divided into 3 levels
Protection level: IP30
Electromagnetic compatibility (EMC) Complies with EM50081-1 and EN50082-2
Detection loop inductance: the limit of 40uH to 100uH ideal value 80uH to 300uH
Operating temperature: -25 ℃ to 70 ℃
Storage temperature: -40 ℃ to 85 ℃
Relative humidity: <90% non-condensing
Temperature compensation: automatic compensation up to 50 ℃ / h
Connection type: 11 pin DIN rail socket
Dimensions: 41 * 78 * 85 mm (width * height * length)
Weight: 250 grams
5). manual push button
This exit switch button is made of ABS and has built-in indicator light make it looks more elegant and fashionbale. It can be widely used in public entrance gates, public door, home, office, hotel, etc.
Door Exit Button Push To Exit Switch Door Opener For Access Control Security
Main Feature
Fashionable appearance
Made of ABS Plastic
Easy to install and operate
Used for access control
Specification
Mechanical Life: 500,000 test
Material: Plastic
6). Limit switch encoder
Voltage: DC5V-24V
Output voltage: high voltage≥85%Vcc, low voltage≤0.5V
Maximum mechanical speed:6000rpm
Anti-vibration: 50m/s,10-200HZ,XYZeach way 2 times.
Current consumption:≤30mA
Response frequency: 0-100KHZ
Protection: waterproof,oil proof,dust prevention, IP54
The output code system: binary code
Operating life: MTBF≥30000(+25℃,2000rpm)
Rotational inertia:4.0x10-8kgm²
Maximum load:radial direction20N
Axial direction:10N
Weight: about 0.4kg
High Speed Door Accessories
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Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hongfadoor.com