Topic
Single crystal
About: Single crystal is a research topic. Over the lifetime, 59617 publications have been published within this topic receiving 870828 citations.
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TL;DR: In this article, a detailed investigation of the site requirement for CO (as well as for methanol) and O2 adsorption on the surface of a well-defined RuO2(110) crystal is conducted.
123 citations
TL;DR: In this article, the Taylor's formula for the calculation of the polycrystalline stress-strain curve from the shear-hardening curve of a free single crystal is derived in a general way, partly following Bishop and Hill, but with emphasis on the physical implications of the assumptions involved.
123 citations
TL;DR: In this article, the elastic constants of single crystals of several intermetallic compounds have been measured in our laboratory by the rectangular parallelepiped resonance method, and the numerical results for materials measured so far: Ni-base L12 compounds Ni3X (X = Mn, Fe, Al, Ga, Ge and Si), TiAl, Ti3Al, CoTi, Co3Ti and CoSi2
122 citations
Abstract: The monolithic perovskite films with a single crystal cross profile are considered to be the ideal active layer for high efficiency perovskite solar cells (PSCs) owing to the minimization of defects and the maximization of charge carrier mobility. To date, how to prepare a high-quality monolithic perovskite film is still a challenge for PSCs. Here, we demonstrated a combined method via CH3NH3Cl (MACl) coordination and a heat assisted process (HAP) to grow a compact monolithic CH3NH3PbI3 (MAPbI3) film with an average grain size of 3.6 μm. The ordered intermediate phase framework of MAPbIxCly grew up from the bottom to the top on the heated substrate, avoiding the grain boundaries and pin-holes in the cross profile. According to the space charge limited current (SCLC), the trap density in the monolithic film was nearly an order of magnitude lower than that of the control samples, while the charge carrier mobility increased to 22.74 cm2 V−1 S−1, approaching that of the MAPbI3 single crystal. As a result, the power conversion efficiency (PCE) of the PSCs is increased from 13.26% to 18.34%. These results shed light on the preparation of high quality monolithic MAPbI3 films via retarding crystallization (MACl additive) and increasing the nucleation rate (HAP).
122 citations
TL;DR: Polarized Raman measurements on single crystals of CuO yield the symmetry assignments of the three predicted Raman active lattice modes : 297cm−1 (Ag, 344cm− 1 (Bg) and 629 cm−1(Bg)) as discussed by the authors.
122 citations