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Centre for Solar Energy Materials (CSEM)

Pilot scale fabrication of CIGS thin film solar cells

Due to the fact that the CIGS manufacturing process is more complex and less standardized than for other types of cells, it is necessary to select simple process route and maintain the manufacturing as flexible as possible. ARCI has planned to pursue this CIGS strategy with different pathways: by improving existing manufacturing processes, and by improving efficiency to develop new technologies on pilot scale in the next-generation CIGS cells.

CIGS thin film solar cells by Non-vacuum route

The existing high temperature and vacuum processing and selenization treatment used in CIGS thin film solar cell fabrication are neither cost effective nor easily scalable to high volume production. In this context, a non-vacuum process for the preparation of CIGS absorber layer without selenization and vacuum treatment is being developed at ARCI. The process is novel and expected to have large impact in CIGS PV industry in terms of cost reduction and easy processing. Moreover, the non-vacuum route will reduce the number of processing steps in complete cell fabrication.

Fabrication of solid state dye-sensitized solar cell module by non-vacuum process

Volume production of conventional solar cell requires high-pure material, energy intensive sophisticated equipments and process. Dye-sensitized solar cells based on low cost material and non-vacuum process such as screen printing and spray coating emerging as a potential technology for next generation green energy demand. Hence, efforts are put on large scale synthesis of photoactive materials (TCO, Metal oxide and Sensitizer) and their integration into solar cell modules by non-vacuum process.

High Selective Absorber Tubes for concentrated solar power (CSP) plant application

High selective absorber tubes having high optical properties (92-95% absorptance, 0.12-0.15 emittance) with high thermal and corrosion stabilities find wide application in the area of high and medium temperature concentrated solar power (CSP) plant application. The nanocomposite coating based absorber tube developed by wet chemical process and other economic processes of controlled thermal and chemical methods offer a cost-efficient alternative for the other expensive techniques (e.g. PVD, CVD, sputtering processes etc.)

Easy to clean coatings for solar energy devices

Easy to clean coatings (dust repellent property) with other functional properties of high optical, weather, corrosion and UV stabilities find wide application as protective coatings for solar energy devices (e.g. PV panels, solar receiver tubes and Al reflectors in CSP) and protect the devices from all sorts of dust, weather, and corrosion environments.

Multifunctional coatings for CSP receiver tubes and PV panel cover plates

Broad band antireflection coatings with antifogging, weather, UV and abrasive resistance properties find wide application in the fields of solar PV, Solar thermal, optical, display etc. The wet chemical synthesis of nanomaterial suspension and coating sols offer a cost-efficient alternative for the development of broad band antireflection coating having a high average transmittance (95-96% in 300-1500nm) with other functional properties.

High temperature stable nanocomposite solar absorber coatings for CSP Application

High temperature stable nanocomposite solar absorber coatings having high optical properties (>95% absorptance, < 0.15 emittance) with high thermal stability find wide application in the area of high and medium temperature concentrated solar power (CSP) plant application. The nanocomposite coating based absorber tube developed by an incorporation of nanoparticles in the precursor chemicals is offering a cost-efficient alternative for the other expensive techniques (e.g. PVD, CVD, sputtering processes etc.)

High performance Broad Band Antireflective Coatings (BBAC) for optical lens, solar thermal receiver tubes, PV panel cover plates and other applications

Broad band antireflective coatings having high optical performance, 100% transmittance (0% Reflection) at a visible wavelength and high average percentage transmittance from UV to MIR region find wide application in the fields of solar PV, Solar thermal, optical, display etc. An economic development of MgF2 nanoparticles / coating suspension is offering a high uniform and mechanically stable coating.