Ricoh Develops All-Solid Dye-Sensitized Solar Cells for Indoor Lighting
Ricoh has introduced a groundbreaking dye-sensitized solar cell (DSSC) designed specifically for indoor lighting environments. Through its proprietary detection method using white LEDs at 200 lux, the company confirmed that this new DSSC can generate a maximum output power of 13.6 μW/cm². In contrast, conventional DSSCs typically achieve only around 8.4 μW/cm² under similar conditions. This significant improvement highlights Ricoh's advancements in optimizing solar cells for low-light applications.
In developing this advanced DSSC, Ricoh focused on achieving full solid-state construction while maintaining high performance under indoor light. To accomplish this, they replaced the traditional liquid tBP additive with a solid alkaline material within the organic P-type semiconductor, spiro-OMeTAD. This change not only enabled complete solidification but also reduced internal resistance, making the device more efficient in low-light conditions and enhancing its overall power output.
The anode is made of ITO, while the hole-blocking layer consists of a metal oxide. The TiOâ‚‚ used in the cell is synthesized through a hydrothermal process, with particle sizes ranging from 1.5 to 2.0 micrometers. The dye employed is a porphyrin-based birune tannin, and the cathode is composed of silver.
Another key innovation is Ricoh’s use of supercritical CO₂ for filling the porous TiO₂ film with a solid electrolyte. This technique improves carrier mobility, leading to better efficiency and higher output power. The company plans to incorporate this technology into future indoor-optimized DSSCs, further pushing the boundaries of energy harvesting in low-light environments.
This development marks a major step forward in making solar cells more practical for indoor applications, such as powering small IoT devices and sensors. With continued research and refinement, Ricoh's approach could pave the way for more sustainable and efficient energy solutions in everyday settings. (Reporter: He Jiji, "Nikkei Electronics")
1. The material use ADC12 aluminum by die casting production , we have 200T , 500T , 700T , 1200T casting machine.
2. The color of lamp surface use powder painting , the color can customized by customers.
3. LED Chips and Driver can customized by customers.
4. The light pole also can provide to customers
5. It can provide Dialux design
LED Street Light,led light street,led street light fixture,outdoor led street light,led residential street lights
Yangzhou M.T. New Energy & Lighting Group Co., Ltd. , https://www.mtstreetlight.com