A solid/mist reaction method is developed to produce well-crystallized light harvester layers without pinhole defects for perovskite solar cells. The reaction based on mist precursor can be facilely operated with low process temperature. And it can effectively control the volume of CH3NH3I solution and the reaction temperature, which affect the quality of perovskite harvester layers and the performance of perovskite solar cells remarkably. Under optimized condition, the efficiencies of devices reach 16.2% with the average efficiency of 14.9%. The solid/mist reaction is also used to fabricate planar junction solar cells and a PCE of 14.9% is obtained.

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This review focuses on the properties of the light fields that are more useful in applications. We review recent means of generating shaped-pulse light field, by which matters can be steered toward the desired products, thereby allowing the coherent control in terms of effectiveness, selectivity and manipulation. Applications of these light fields are discussed, including bioscience, laser machining, novel material fabrication, trace material detection and military.

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In this paper, we develop high performance poly(3,4ethylenedioxythiophene) (PEDOT) counter electrodes (CEs) by a vapor deposition method, which gives 6.09% in conversion efficiency for the dye-sensitized solar cell (DSSC) with a thin PEDOT film CE (16 nm in thickness). To increase the quantity of PEDOT deposited on the CEs, we insert an antimony tin oxide (ATO) porous conductive supporting layer to increase the internal deposition area. The conversion efficiency of the DSSC with this PEDOT/ATO composite CE is enhanced to 7.47%. † Electronic supplementary information (ESI) available: Experimental details, cross-sectional SEM images of ATO lm and Nyquist plots of the DSSCs. See

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The temporal delayed orthogonal pulse pairs generated by the phase shaping technique are used to study the coherent control of the rotational wave packet dynamics in air. By continuously changing the intrapulse delay of the pump pulse, we measured the corresponding revival signals and obtained a two-dimensional rotational coherent spectrum (2D RCS). An additive property of the rotational dynamics is observed from the revival signals. Moreover, combining with the coherent control model, we find that the 2D RCS can be used to demonstrate the control over the underlying Raman rotational excitation. A beat frequency-dependent oscillation of each rotational transition is obtained. The transition process is revealed from the Fourier transformation about the pump delay. The scheme of this work can be used for further control and detection of the rotational wave packet and can be extended to other molecular dynamic researches.