【摘 要】
：
As a famous hole transporting material,nickle oxide (NiOx) has drawn enormous attention due to its low cost and superior stability.However,the relatively low conductivity and high-density surface trap states of NiOx severely limit device performance in so
【机 构】
：
Institute of Photovoltaics,Southwest Petroleum University,Chengdu 610500,China
论文部分内容阅读
As a famous hole transporting material,nickle oxide (NiOx) has drawn enormous attention due to its low cost and superior stability.However,the relatively low conductivity and high-density surface trap states of NiOx severely limit device performance in solar cell applications.Interfacial engineering is an efficient approach to achieve remarkable hole-transporting performance by surface passivation.Herein,the efficient NiOx hole transport layer was prepared by surface passivation engineering strategy via facile solution processes with cesium iodide (Csl).It is demonstrated that Csl plays a super-effective dual-function role in inverted solar cell device:On one hand,the presence of Csl hugely passivates the surface trap states at the NiOx/perovskite interface along with obviously improved conductivity by the incorporated Cs+;on the other hand,the ions immigration is significantly suppressed by the presence of I ion for high-quality perovskite films,resulting in a stable contact interface.The ameliorative interface leads to largely reduced carrier non-radiative recombination,attributing to boosted carrier extraction efficiency.As a result,decent power conversion efficiency (PCE) of 18.48％ with a noticeable fill factor (FF) beyond 80％ was achieved.This facile and efficient surface engineering approach with dual-function shows excellent potential for the design of high-performance functional interfacial modification layer to achieve high-performance solar cells.
其他文献
Green synthesis has grabbed appreciable attention to eliminate the negative effects associated with various chemical processes.Due to the unparalleled electrical,mechanical,thermal and excellent physical properties,graphene,as the thinnest two-dimensional
Tomonaga-Luttinger liquid (TLL),a peculiar one-dimensional (1D) electronic behavior due to strong correlation,was first studied in 1D nanostructures and has attracted significant attention over the last several decades.With the rise of new two-dimensional
Organic spin valve (OSV),one of the most promising and representative devices involving spin injection,transport and detection,has drawn tremendous attention owing to their ultra-long spin relaxation time in the field of molecular spintronics.Since the fi
In the recent times sodium ion batteries (SIBs) have come to the forefront as an economic and resourceful alternative to lithium-ion batteries (LIBs) for powering portable electronic devices and large-scale grid storage.As the specific capacity,energy den
We propose a plasmonic atomic force microscopy (AFM) probe,which takes a part of the laser beam for monitoring cantilever deflection as the excitation light source.Photonic crystal cavities are integrated near the cantilever\'s free end where the laser
The next generation of electronics technology is purely going to be based on wearable sensing systems.Wearable electronic sensors that can operate in a continuous and sustainable manner without the need of an external power sources,are essential for porta
Graphene quantum dots (GQDs),have unique quantum confinement effects,tunable bandgap and luminescence property,with a wide range of potential applications such as optoelectronic and biomedical areas.However,GQDs usually have a strong tendency toward aggre
The energy crisis has always been a widely concerned problem.It is an urgent need for green and renewable energy technologies to achieve sustainable development,and the photo-assisted charging energy storage devices provide a new way to realize the sustai
Radiotherapy (RT) based on X-ray irradiation is a widely applied cancer treatment strategy in the clinic.However,treating cancer based on RT alone usually results in insufficient radiation energy deposition,which inevitably has serious side effects on hea
Molybdenum disulfide (MoS2) has received enormous attentions in the electrochemical energy storage due to its unique two-dimensional layered structure and relatively high reversible capacity.However,the application of MoS2 in potassium-ion batteries (PIBs