In few years only, the efficiency record of perovskite solar cells（PSCs） has raised quickly from 3.8% to over 22%. This emerging photovoltaic technology has primarily shown its great potential of industrialization. ...In few years only, the efficiency record of perovskite solar cells（PSCs） has raised quickly from 3.8% to over 22%. This emerging photovoltaic technology has primarily shown its great potential of industrialization. Flexible PSCs are thought to be one of the most priority options for mass production, related to the intrinsic advantage of perovskite thin films which could be deposited by facile solution processes at low temperature. Flexible PSCs have at least four advantages in comparison to the rigid counterpart：（1） it can generate higher power output at lighter weight,（2） it is easily portable,（3） it can be easily attached to architectures or textiles with diverse shapes, and（4） it is compatible with roll-to-roll fabrication in a large scale. In this review, we have summarized recent development of the key materials and technologies applied in flexible PSCs. The key materials including flexible substrates, transparent and conductive electrodes, and interfacial materials; some key technologies about roll-to-roll manufacture, encapsulation technology have been overviewed. Finally, a prospect on possible application directions of flexible PSCs has been discussed.展开更多
Flexible,wearable electronics are the future of electronics.Although organic photovoltaic devices have the advantages of high efficiency,low cost,and flexibility,they face the problem of failure due to the effects of ...Flexible,wearable electronics are the future of electronics.Although organic photovoltaic devices have the advantages of high efficiency,low cost,and flexibility,they face the problem of failure due to the effects of water vapor in the environment.Therefore,the development of encapsulation films with outstanding mechanical and encapsulation properties is the key to realizing wearable devices.This review provides an overview of the development of thin-film encapsulation(TFE),the application of TFE in the field of optoelectronics,recent advances in the field of flexible encapsulation with TFE using atomic layer deposition technology,and an outlook on future trends in the field of flexible encapsulation with TFE using atomic layer deposition technology.展开更多
Silica thin films synthesized sol–gel process are proposed as flexible encapsulation materials.A sol–gel process provides a dense and stable amorphous silica structure,yielding an extremely high elastic deformation ...Silica thin films synthesized sol–gel process are proposed as flexible encapsulation materials.A sol–gel process provides a dense and stable amorphous silica structure,yielding an extremely high elastic deformation limit of 4.9%and extremely low water vapor transmission rate(WVTR)of 2.90×10^(−4)g/(m^(2)∙day)at 60℃and relative humidity of 85%.The WVTR is not degraded by cyclic bending deformations for the bending radius corresponding to a tensile strain of 3.3%in the silica encapsulation film,implying that the silica thin film is robust against the formation of pinhole-type defects by cyclic bending deformations.Flexible organic solar cells encapsulated with the silica films operate without degradation in power conversion efficiency for 50,000 bending cycles for a bending radius of 6 mm.展开更多
基金financially supported by the National Natural Science Foundation of China(51672094,51661135023)the National Key R&D Program of China(2016YFC0205002)+1 种基金the Selfdetermined and Innovative Research Funds of HUST(2016JCTD111)the open research funds of Engineering Research Center of Nano-Geo Materials of Ministry of Education,China University of Geosciences(NGM2017KF013)
文摘In few years only, the efficiency record of perovskite solar cells（PSCs） has raised quickly from 3.8% to over 22%. This emerging photovoltaic technology has primarily shown its great potential of industrialization. Flexible PSCs are thought to be one of the most priority options for mass production, related to the intrinsic advantage of perovskite thin films which could be deposited by facile solution processes at low temperature. Flexible PSCs have at least four advantages in comparison to the rigid counterpart：（1） it can generate higher power output at lighter weight,（2） it is easily portable,（3） it can be easily attached to architectures or textiles with diverse shapes, and（4） it is compatible with roll-to-roll fabrication in a large scale. In this review, we have summarized recent development of the key materials and technologies applied in flexible PSCs. The key materials including flexible substrates, transparent and conductive electrodes, and interfacial materials; some key technologies about roll-to-roll manufacture, encapsulation technology have been overviewed. Finally, a prospect on possible application directions of flexible PSCs has been discussed.
基金National Natural Science Foundation project,Grant/Award Number:62374070Project of Science and Technology Development Plan of Jilin Province,Grant/Award Numbers:20230201040GX,20240302068GX。
文摘Flexible,wearable electronics are the future of electronics.Although organic photovoltaic devices have the advantages of high efficiency,low cost,and flexibility,they face the problem of failure due to the effects of water vapor in the environment.Therefore,the development of encapsulation films with outstanding mechanical and encapsulation properties is the key to realizing wearable devices.This review provides an overview of the development of thin-film encapsulation(TFE),the application of TFE in the field of optoelectronics,recent advances in the field of flexible encapsulation with TFE using atomic layer deposition technology,and an outlook on future trends in the field of flexible encapsulation with TFE using atomic layer deposition technology.
基金Basic Science Research Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Education(No.2019R1I1A3A01054545)National Research Foundation of Korea(NRF)grant funded by the Ministry of Science and ICT(MSIT)(Nos.2020M3H4A1A02084911 and 2019R1A2C1009025).
文摘Silica thin films synthesized sol–gel process are proposed as flexible encapsulation materials.A sol–gel process provides a dense and stable amorphous silica structure,yielding an extremely high elastic deformation limit of 4.9%and extremely low water vapor transmission rate(WVTR)of 2.90×10^(−4)g/(m^(2)∙day)at 60℃and relative humidity of 85%.The WVTR is not degraded by cyclic bending deformations for the bending radius corresponding to a tensile strain of 3.3%in the silica encapsulation film,implying that the silica thin film is robust against the formation of pinhole-type defects by cyclic bending deformations.Flexible organic solar cells encapsulated with the silica films operate without degradation in power conversion efficiency for 50,000 bending cycles for a bending radius of 6 mm.
