Publications by authors named "Julio S Sarmiento"
Article Synopsis
- Incorporating n-type, low-optical-gap organic molecules into 2D:3D mixed perovskite composites enhances power conversion efficiencies (PCEs) and stability compared to purely 3D perovskite solar cells.
- The resulting ternary perovskite-organic composites show improved film quality and efficient charge transfer, leading to PCEs exceeding 23%, among the highest for this type of solar cell.
- This research highlights a promising approach to boost performance and reduce issues like hysteresis in perovskite solar cells by using a combination of organic and perovskite materials.
Effect of Composition on the Spin Relaxation of Lead Halide Perovskites.
J Phys Chem Lett
February 2020
Lead halide perovskites have been promising candidates in spintronics applications; however, the mechanism of spin relaxation is still unclear. Here, we compare the temperature-dependent spin dynamics of four perovskite films (XPbY) with different compositions (X = CHNH, Cs; Y = I, Br). The room-temperature net spin lifetime is found to increase as the molar mass decreases, indicating the dominant role of spin orbital coupling in their spin relaxation.
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