Consider the following statements regarding Perovskite: It has the sam...
Perovskite is a type of mineral that has gained significant attention in recent years due to its unique properties and potential applications in various fields such as solar cells, LEDs, and sensors. Let's analyze the given statements regarding Perovskite and determine their accuracy.
Statement 1: Perovskite has the same crystal structure as the mineral calcium titanium oxide.
This statement is correct. The crystal structure of Perovskite is named after the mineral calcium titanium oxide, which was first discovered in the Ural Mountains of Russia. The crystal structure of Perovskite is characterized by the arrangement of its atoms in a cubic lattice, with a general formula ABX3. In this structure, the A-site is occupied by larger cations, the B-site is occupied by smaller cations, and the X-site is occupied by anions. Calcium titanium oxide also shares this crystal structure, and therefore, the statement is correct.
Statement 2: Perovskite can be used as an insulating material.
This statement is incorrect. Perovskite is not typically used as an insulating material. In fact, it is well-known for its semiconducting properties and is often used in the development of efficient solar cells. Perovskite solar cells have shown remarkable progress in recent years, achieving high power conversion efficiencies and offering a cost-effective alternative to traditional silicon-based solar cells. Perovskite materials also exhibit other interesting properties such as high photoluminescence, excellent charge carrier mobility, and tunable bandgaps, which make them suitable for various optoelectronic applications. However, as an insulating material, Perovskite is not commonly used.
In conclusion, the correct answer is option 'C' - Both statements 1 and 2 are correct. Perovskite does have the same crystal structure as the mineral calcium titanium oxide, and it is primarily used as a semiconducting material rather than an insulating material.
Consider the following statements regarding Perovskite: It has the sam...
Recently, Indian scientists have indigenously developed highly stable, low-cost Carbon-based perovskite solar cells with superior thermal and moisture stability.
- The Carbon-based perovskite solar cells is the first indigenous perovskite-powered niche product developed in India and can pave the way for futuristic stable perovskite solar cells.
- Issues with Perovskite photovoltaic cells
- They face the problem of degradation during operation when they come in contact with heat, moisture, light, and other environmental factors.
- This long-duration stability is a major hindrance in the large-scale commercialisation of the product.
- While Carbon-based perovskite solar cells (CPSCs) have been successful in minimizing device stability issues and fabrication costs, the sensitivity of perovskite materials toward humidity and thermal stress is a major obstacle for practical implementation.
- Scientists have engineered MaPbI3 (MAPI-Methylammonium-lead-iodide) to attain thermal stability by incorporating Guanidinium iodide (GuI) and moisture stability by surface passivation using 5- amino valeric acid iodide (5-AVAI).
- Significance:
- The indigenously developed perovskite solar cells can help resolve stability concerns in PSCs bring down high fabrication costs and could help speed up of commercialization in PSC-based niche products.
- Perovskite is a material that has the same crystal structure as the mineral calcium titanium oxide (CaTiO3), the first-discovered perovskite crystal.
- The mineral was discovered in the Ural Mountains of Russia by Gustav Rose in 1839 and is named after Russian mineralogist Lev Perovski.
- Generally, perovskite compounds have a chemical formula ABX3, where ‘A’ and ‘B’ represent cations, and X is an anion that bonds to both.
- Due to its compositional flexibility, scientists can design perovskite crystals to have a wide variety of physical, optical, and electrical characteristics from insulating, semiconducting, metallic, and superconducting characteristics.
Hence both statements are correct.