- Model/Number: 9070-8
- Size mm ± 0.5 (Length * Width * Thickness ): 90*70*3.2mm
- Open circuit voltage ≥: 6.4V
- Short circuit current : 70μA
- Working voltage: 4.6V
- Working current: 54μA
Amorphous silicon (a-Si): It is the non-crystalline form of silicon which is a thin-film solar cells based on amorphous silicon compounds. The cell structure has a single sequence of p-i-n layers. When exposed to sun, their power output is significantly decreased. A-Si type thin film solar cells are commonly found in calculators. A-Si type thin film is manufactured in 6 steps. First the glass substrate is coated with a TCO (transparent conductive oxide) layer as front contact, followed by P1 laser scribing. Then a layer of a-Si is deposited followed by P2 laser scribing. Then a metal conductive layer is placed as back contact with the relative P3 laser scribing.
Mars Rock 4.6V 54mA indoor solar cell is built with amorphous silicon solar cell. It can generate electricity from environment light like sunlight or indoor light. These kinds of custom solar cells can be used to supply power to low-consumption electronic devices such as IoT devices, watches, calculators, measurement units, wireless sensor, weather station etc.
Features
- Outdoor use A-Si solar cell;
- No frame, standard thickness 3.2mm and easy integration;
- Excellent response to low, cloudy and diffusive illumination;
This 4.6V 54mA solar panel is built wit amorphous silicon solar cell. It can generate electricity from environment light like sunlight or indoor light. This kind of amorphous solar cell can be used to power low-consumption electronic devices such as diversified lamps, wireless weather station and outdoor-use sensor etc.
Principles of Power Generation
Power is generated in solar cells due to the photovoltaic effffect of semiconductors.
- When a semiconductor is exposed to a light source of suitable intensity, a large number of electrons (－) and holes (＋) are generated and form electricity.
- At a p/n junction between two difffferent semiconductor materials, the electrons are collected in the n-type material and the holes are collected in the p-type material by internal electric fifield.
- When an external load is connected, electricity flflows through the load. Then generated electricity can be used.
Technical characteristic
- Using the straight line internal integrative structure can simplify the craft;
- The amorphous silicon deposition uniformization technology enhances the uniformity of the amorphous silicon film;
- Using the composite construction TCO conductive film, increase the visible light transmissibility of short-wave band;
- Using special ingredient allocated proportion of the amorphous silicon film enhance the battery electricity performance;
- Using the special transparent conductive film design, prevented and has avoided the short circuit and the leakage.
Amorphous solar panel’s features
- Copes easily with deviceʼs required drive voltage
Since multiple cells can be simultaneously connected in a series when the solar cells are formed, unlike the fabrication technique used with crystalline silicon solar cells in which multiple solar cells are severed and connected, it is easy to create cells with a variety of voltages.
- Variety of shapes and forms
The methods used in amorphous silicon fifilms have special features that allow other substrates, such as stainless steel or plastic fifilms, to be used instead of customary glass substrates.
This means that previously unknown solar cells can also be created, including solar cells that are round, square, or any other complex shape or solar cells that can even be bent. It is also possible to create areas in these solar cells that just consist of transparent glass by etching.
- High sensitivity within visible light spectrum
The human eye is sensitive to light from a range of about 400 to 700 nm wavelengths.
Since amorphous silicon solar cells are sensitive to light with essentially the same wavelengths, they can also be used as visible light sensors.
