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Technology and Innovation

R&D of Clean Energy

A company should be an all-time technical leader in order to survive and thrive. As a global leading thin-film solar power company, Hanergy not only engages in R&D of thin-film photovoltaic technology, but also keep close track of the development trends and the global research progress of future clean energy such as the cutting edge photovoltaic technology. In this way, we can maintain our strategic judgment of the development of clean energy in particular photovoltaic solar power, and stay in close contact with and lead the cutting-edge technical innovation. At present, Hanergy is focused on R&D topics such as energy storage technology, smart micro-grid, concentrate photovoltaics, organic solar cells and hetero-junction solar cells.

Energy storage
Energy storage mainly refers to the storage of electric power. Power generation and consumption can be separated when energy storage equipment is included as part of the traditional power system. Namely, simultaneous transmission of the power generated and real-time balance between the generation and load are no longer required, and demand-side management can be achieved. Energy storage can not only make better use of the power system and reduce the power supply costs, but also promote the use of renewable energy and improve stable operations of the power system. Energy storage mainly refers to the storage of electric power. Power generation and consumption can be separated when energy storage equipment is included as part of the traditional power system. Namely, simultaneous transmission of the power generated and real-time balance between the generation and load are no longer required, and demand-side management can be achieved. Energy storage can not only make better use of the power system and reduce the power supply costs, but also promote the use of renewable energy and improve stable operations of the power system.
Its application is transforming the way that the traditional power system is designed, planned, dispatched and regulated. The power grid with the energy storage technology can be more reliable and quality of its power supply be improved by way of peak regulation, smooth grid access of renewable energy, power frequency regulation, voltage support and load following.

Smart microgrid
Integrating the distributed generation, energy storage and conversion devices, loading and monitoring and protection devices, smart microgrid is a self-controlled, protected and managed autonomous system which is able to be connected to the external grid and operated stand-alone. Integrating the distributed generation, energy storage and conversion devices, loading and monitoring and protection devices, smart microgrid is a self-controlled, protected and managed autonomous system which is able to be connected to the external grid and operated stand-alone.
From a micro perspective, the microgrid is a small power system with full generation, transmission and distribution functions and is able to maintain partial power balance and energy optimization. It differs from the load-carrying distributed generation system in which it can be connected to the grid and operates standalone at the same time. From a macro perspective, the microgrid can be regarded as a virtual power supply or a load in the distribution grid.

CPV
Concentrated photovoltaic (CPV) technology uses optics such as lenses or curved mirrors to concentrate a large amount of sunlight onto a small area of high-conversion-efficiency solar cells to generate electricity. For example, with one 1,000X concentrator, one triple-stacked InGaP/GaAs/Ge solar cell of one cm2 with 36% conversion efficiency can generate the power from seven five-inch silicon solar cells. With its unparalleled advantages compared with crystalline silicon solar cells, CPV is recognized as the 3rd generation PV technology in the solar power community.Concentrated photovoltaic (CPV) technology uses optics such as lenses or curved mirrors to concentrate a large amount of sunlight onto a small area of high-conversion-efficiency solar cells to generate electricity. For example, with one 1,000X concentrator, one triple-stacked InGaP/GaAs/Ge solar cell of one cm2 with 36% conversion efficiency can generate the power from seven five-inch silicon solar cells. With its unparalleled advantages compared with crystalline silicon solar cells, CPV is recognized as the 3rd generation PV technology in the solar power community.

OPV
First developed in the 1990’s, organic solar cells use organic semi-conductors to produce electricity by the photovoltaic effect. Compared with inorganic solar cells, the thin and light-weight organic solar cells are highly cost-effective to manufacture large-area flexible devices. Therefore, it has huge development and application potentials and has become one of the most dynamic and cutting-edge research areas in new materials and new energy.First developed in the 1990’s, organic solar cells use organic semi-conductors to produce electricity by the photovoltaic effect. Compared with inorganic solar cells, the thin and light-weight organic solar cells are highly cost-effective to manufacture large-area flexible devices. Therefore, it has huge development and application potentials and has become one of the most dynamic and cutting-edge research areas in new materials and new energy.
Fully or partially based on organic materials, the organic solar cells use conductive polymers or small organic molecules for light absorption and charge transport. The solar spectrum absorbed by the cells is aligned with that of the sunlight by changing the energy gap through an altered length and functional groups of polymers. The thin organic films can also absorb a large amount of sunlight because of the high absorption co-efficient of organic materials. The main disadvantages associated with organic solar cells are low efficiency and low stability compared to inorganic solar cells.

HIT
Manufactured with a process and equipment similar with those for thin-film solar cells, HIT (Hetero-junction with intrinsic thin-layer) cells combine the advantages of crystalline silicon and thin-film solar cells as a hetero-junction cell. Or rather, they are like crystalline silicon cells manufactured by the techniques for thin-film ones and thus will probably become one direction for thin-film PV companies to develop crystalline silicon cell technologies. HIT cells stand out for its highest open-circuit voltage (OCV), as a result of amorphous silicon passivation in both intrinsic buffer-layers, hetero-junction of silicon, and an N-type substrate with a unique energy-band structure and long minority-carrier lifetimes.Manufactured with a process and equipment similar with those for thin-film solar cells, HIT (Hetero-junction with intrinsic thin-layer) cells combine the advantages of crystalline silicon and thin-film solar cells as a hetero-junction cell. Or rather, they are like crystalline silicon cells manufactured by the techniques for thin-film ones and thus will probably become one direction for thin-film PV companies to develop crystalline silicon cell technologies. HIT cells stand out for its highest open-circuit voltage (OCV), as a result of amorphous silicon passivation in both intrinsic buffer-layers, hetero-junction of silicon, and an N-type substrate with a unique energy-band structure and long minority-carrier lifetimes.
Featuring the combination of thin-film technology and substrate of crystalline silicon, HIT can increase the efficiency of industrial cells by around 24% through relatively simple techniques and processes.

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