【摘 要】
：
With ideal combination of benefits that selectively converts high photon energy spectrum into electricity while transmitting low energy photons for photosynthesis,the CH3NH3PbBr3 perovskite solar cell (BPSC) is a promising candidate for efficient greenhou
【机 构】
：
Dalian National Laboratory for Clean Energy;iChEM, Dalian Institute of Chemical Physics, Chinese Aca
论文部分内容阅读
With ideal combination of benefits that selectively converts high photon energy spectrum into electricity while transmitting low energy photons for photosynthesis,the CH3NH3PbBr3 perovskite solar cell (BPSC) is a promising candidate for efficient greenhouse based building integrated photovoltaic (BIPV) applications.However,the efficiency of BPSCs is still much lower than their theoretical efficiency.In general,interface band alignment is regarded as the vital factor of the BPSCs whereas only few reports on enhancing perovskite film quality.In this work,highly efficient BPSCs were fabricated by improving the crystallization process of CH3NH3PbBr3 with the assistance of anti-solvents.A new anti-solvent of diphenyl ether (DPE) was developed for its strong interaction with the solvents in the perovskite precursor solution.By using the anti-solvent of DPE,trap-state density of the CH3NH3PbBr3 film is reduced and the electron lifetime is enhanced along with the large-grain crystals compared with the samples from conventional anti-solvent of chlorobenzene.Upon preliminary optimization,the efficiencies of typical and semitransparent BPSCs are improved to as high as 9.54％ and 7.51％,respectively.Optical absorption measurement demonstrates that the cell without metal electrode shows 80％ transparency in the wavelength range of 550-1000 nm that is perfect for greenhouse vegetation.Considering that the cell absorbs light in the blue spectrum before 550nm,it offers very high solar cell efficiency with only 17.8％ of total photons,while over 60％ of total photons can transmit through for photosynthesis if a transparent electrode can be obtained such as indium doped SnO2.
其他文献
Methane dehydroaromatization was studied over Mo/SiO2 and Mo/HZSM-5 with different Mo loadings (2,5,10 wt％) at 973 K and 1023 K in a recirculating batch reactor.H2 pretreatment at 1023 K prior to methane activation has significantly improved the catalyst
Although great accomplishments of functional material synthesis have been achieved in sodium ion batteries (SIBs) recently,there are still numerous challenges and problems in preparing carbon-based materials with porous architectures and enough lattice di
The co-precipitation derived LiNi0.8Co0.15Al0.05O2 cathode material was modified by a coating layer of TiP2O7 through an ethanol-based process. The TiP2O7 -coated LiNi0.8Co0.15Al0.05O2 is characterized by X-ray diffraction analysis, scanning electron micr
The lattice doping has been widely used to improve the electrochemical performances of Li-rich cath-ode materials but the roles of the introduced foreign atoms are still not very clear. Herein, a series of Li 2 Ru 1- x Ti x O3 solid solutions have been sy
Crystal planes of a catalyst play crucial role in determining the electrocatalytic performance for CO2 re-duction. The catalyst SnO2 can convert CO2 molecules into valuable formic acid (HCOOH). Incorporating heteroatom N into SnO2 further improves its cat
A symmetric all-organic non-aqueous redox flow-type battery was investigated employing the neutral small molecule radical 3-phenyl-1,5-di-p-tolylverdazyl,which can be reversibly oxidized and reduced in one-electron processes,as the sole charge storage mat
A strong interface coupling is of vital importance to develop metal oxide/carbon nanocomposite anodes for next-generation lithium ion batteries.Herein,a rational N-doped carbon riveting strategy is designed to boost the lithium storage performance of Fe3O
Stability of borohydrides is determined by the localization of the negative charge on the boron atom. Ionic liquids (ILs) allow to modify the stability of the borohydrides and promote new dehydrogenation pathways with a lower activation energy. The combin
Hydrogen peroxide (H2O2) is one of the 100 most important chemicals involved in multiple chemical processes including paper and textile manufacturing, waste degradation, and pharmaceutical production [1].Compared with the current industrial process to pro
The vanadium flow battery (VFB) has been considered as one of the most promising large-scale energy storage technologies in terms of its design flexibility,long cycle life,high efficiency and high safety.However,the high cost prevents the VFB technology f