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Photovoltaic technology requires efficient, lightweight, low-cost, and stable operation of absorbing materials. Organic lead halide perovskites are a very promising class of materials, but their stability under environmental conditions is limited, and they do not require heavy and expensive packaging. Here, we report on ultra-thin (3 μ m) High-flexibility perovskite solar cells with a stable 12% efficiency and a unit weight power of up to 23 W g-1. To promote stable air operation, we have introduced a chromium oxide chromium interlayer, which can effectively protect the metal top from the impact of reaction with perovskite. Using a transparent polymer electrode treated with dimethyl sulfoxide as the bottom layer, depositing a pinhole-free perovskite film from a low-temperature solution on any substrate (including thin plastic foil) with high yield is possible. These ultra-lightweight solar cells have been successfully used to power aviation models. Potential future applications include uncrewed aerial vehicles (from aeroplanes to quadcopters and weather balloons) for environmental and industrial monitoring, rescue and emergency response, and tactical safety applications.

As an important chromium compound, chromium oxide plays an important role in reforming the stability and efficiency of perovskite solar cells. By forming an efficient electron transfer interface through contact with metals, chromium oxide can effectively reduce the resistance of batteries and improve the efficiency of charge collection. In addition, the chemical stability of chromium oxide enables it to maintain stable performance under harsh environmental conditions, thereby improving the long-term stability of perovskite solar cells. Therefore, using chromium oxide to improve the performance of perovskite solar cells is a promising research direction, which is expected to promote further development of solar cell technology.

(Chromium Oxide)


Chromium Oxide is an important chromium compound with the chemical formula Cr2O3. Chromium Oxide is a dense, completely opaque, medium-purity light green pigment with bright and dark green hues. It has high-temperature resistance, hardness, excellent weather resistance and stability, and is relatively stable to the light, atmosphere, and corrosive gases (such as H2S, SO2, etc.). Insoluble in water and ethanol, resistant to acid and alkali, and possessing magnetism.

The characteristics of Chromium Oxide:

  1. High coverage: able to cover the substrate, providing good decorative and protective effects.
  2. Stability: Stable in the atmosphere, without affecting general concentrations of acid, alkali, and sulfur dioxide gas.
(Chromium Oxide)

Application of Chromium Oxide:

  1. Pigments and coatings: Due to their stable chemical properties and excellent covering power, they are widely used in fields such as coatings, ceramics, rubber, art pigments, and camouflage coatings.
  2. Battery electrode material: Lithium-ion batteries are also used as an electrode material.
  3. Precursors of functional ceramics and oxides: Can synthesize functional ceramics and oxides.
  4. Other uses: In the solid-state reaction of forming a new ternary oxide, CrVMoO7, it is also used as a raw material, and this ternary oxide can be used for selective oxidation.
(Chromium Oxide)


TRUNNANO is a supplier of molybdenum disulfide with over 12 years of experience in the manufacturing of chemical materials. It accepts payments through credit cards, T/T, Western Union transfers, and PayPal. Trunnano will ship the goods to overseas clients through FedEx, DHL, air or sea freight. If you are looking for high-quality Chromium Oxide, please get in touch with us and send us an inquiry.

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