We consider Einstein-Maxwell-dilaton theory in ($2+1$) dimensions where the coupling between scalar field and Maxwell invariant is dilatonic $f(\ensuremath{\phi})=\mathrm{exp}(\ensuremath{-}2\ensuremath{\alpha}\ensuremath{\phi})$, we obtain novel, exact, rotating black hole solutions. The parameter $\ensuremath{\alpha}$ impacts metric function, affecting properties of hole, its mass, also therm...

Reducing energy loss (Vloss) is one of the most crucial challenges in organic photovoltaic cells. The Vloss, determined by differences between optical band gap (Eg) active layer material and open-circuit voltage (Voc) device, generally alleviated lowering difference lowest unoccupied molecular orbital (LUMO) highest occupied (HOMO) level donor (D) acceptor (A). In this work, we synthesized two ...

Generalizations of the Black Hole geometry of Bañados, Teitelboim and Zanelli (BTZ) are presented. The theory is three-dimensional vacuum Einstein theory with a negative cosmological constant. The n-black-hole solution has n asymptotically anti-de Sitter “exterior” regions that join in one “interior” region. The geometry of each exterior region is identical to that of a BTZ geometry; in particu...

The holographic description in the presence of gravitational Chern-Simons term is studied. The modified gravitational equations are integrated by using the FeffermanGraham expansion and the holographic stress-energy tensor is identified. The stressenergy tensor has both conformal anomaly and gravitational or, if re-formulated in terms of the zweibein, Lorentz anomaly. We comment on the structur...