How can we prevent room temperature rise in agricultural greenhouses?

Farming in greenhouse is essential to protect crops and workers from pests and weather damage. On the other hand, the inside of closed greenhouses
in midsummer can become the sauna exceeding 40 degrees caused by sunlight irradiation, and and it caused high temperature damage of crops and heatstroke of farming workers.

There are some ways to prevent the temperature rise, such as rolling up the sheets that cover the house and opening the doorways, but they are inefficient and can be counterproductive.

Is it possible to prevent room temperature rise in agricultural greenhouses efficiently?

We think,

The photosynthetic absorption wavelengths of chlorophyll pigments, which have significant impact on crop growth, have peaks around 660nm (red) and 480nm (blue). White reflective materials and cold screens used for heat shielding in general agricultural greenhouses physically shield light energy, and thus insufficient uptake of visible light around 500 to 700nm has been a problem.

If we had a material that could transmit only the light necessary for the crop while cutting heat from sunlight, we could improve the room temperature rise in the house in midsummer.

Our suggest,

Near-Infrared Absorbing Materials GTO  has both high heat shielding and transparency.
Near-Infrared Absorbing Materials GTO can cut light of wavelengths between 850 and 1200nm which is the source of sunlight’s heat, and transmit light in the range of 400-850 nm, which is necessary for crop photosynthesis.

The ability of our Near-Infrared Absorbing Materials GTO such as to prevent the room temperature from rising in agricultural houses in mid-summer, making it applicable to other fields as well.