Light-emitting diodes(LEDs)based on halide perovskites have witnessed rapid advancement in recent years,benefiting from their exceptional optoelectronic properties,including high photoluminescence quantum yield(PLQY),...Light-emitting diodes(LEDs)based on halide perovskites have witnessed rapid advancement in recent years,benefiting from their exceptional optoelectronic properties,including high photoluminescence quantum yield(PLQY),widely tunable bandgap,and excellent color purity.A notable characteristic of conventional metal halide perovskites,however,is their small exciton binding energy,which weakens radiative recombination and thereby limits the external quantum efficiency(EQE)of perovskite LEDs(PeLEDs).展开更多
We focus on the distribution and free energy of a wormlike polymer confined between two parallel hard walls.The variation in the distribution and free energy of the wormlike chain as the spacing between the walls decr...We focus on the distribution and free energy of a wormlike polymer confined between two parallel hard walls.The variation in the distribution and free energy of the wormlike chain as the spacing between the walls decreases(or as the total contour length of the wormlike chain increases or as the persistence length of the chain increases)is simulated.The main reason for these changes is a degradation of the long wormlike chain into a Gaussian long chain under weak confinement.展开更多
文摘Light-emitting diodes(LEDs)based on halide perovskites have witnessed rapid advancement in recent years,benefiting from their exceptional optoelectronic properties,including high photoluminescence quantum yield(PLQY),widely tunable bandgap,and excellent color purity.A notable characteristic of conventional metal halide perovskites,however,is their small exciton binding energy,which weakens radiative recombination and thereby limits the external quantum efficiency(EQE)of perovskite LEDs(PeLEDs).
基金partly supported by the National Natural Science Foundation of China (Nos.11471046 and 11971002)
文摘We focus on the distribution and free energy of a wormlike polymer confined between two parallel hard walls.The variation in the distribution and free energy of the wormlike chain as the spacing between the walls decreases(or as the total contour length of the wormlike chain increases or as the persistence length of the chain increases)is simulated.The main reason for these changes is a degradation of the long wormlike chain into a Gaussian long chain under weak confinement.
