Application of two-dimensional MXene materials in photovoltaics has attracted increasing attention since the first report in 2018 due to their metallic electrical conductivity,high carrier mobility,excellent transpare...Application of two-dimensional MXene materials in photovoltaics has attracted increasing attention since the first report in 2018 due to their metallic electrical conductivity,high carrier mobility,excellent transparency,tunable work function and superior mechanical property.In this review,all developments and applications of the Ti3C2Tx MXene(here,it is noteworthy that there are still no reports on other MXenes’application in photovoltaics by far)as additive,electrode and hole/electron transport layer in solar cells are detailedly summarized,and meanwhile,the problems existing in the related studies are also discussed.In view of these problems,some suggestions are given for pushing exploration of the MXenes’application in solar cells.It is believed that this review can provide a comprehensive and deep understanding into the research status and,moreover,helps widen a new situation for the study of MXenes in photovoltaics.展开更多
In this study,a novel photovoltaic cell based on the Ti_(3)C_(2)T_(x) MXene/n-type silicon(n-Si)Schottky junction is developed by a simple solution-processed method of drop-casting the Ti_(3)C_(2)T_(x) MXene ethanol s...In this study,a novel photovoltaic cell based on the Ti_(3)C_(2)T_(x) MXene/n-type silicon(n-Si)Schottky junction is developed by a simple solution-processed method of drop-casting the Ti_(3)C_(2)T_(x) MXene ethanol suspension onto the surface of n-Si wafers and the subsequent natural drying in air.The demonstration device with a simple configuration of Ag(top electrode)/Ti_(3)C_(2)T_(x)/n-Si/In:Ga(back electrode)delivers a power conversion efficiency(PCE)of 5.70%with a short-circuit current density(Jsc)of 20.68 mA cm^(−2),open-circuit voltage(V_(oc))of 0.530 V and fill factor(FF)of 52.0%under AM 1.5G illumination.After treating the MXene layer with the SnCl_(2) aqueous solution,an improved PCE to 6.95%(J_(sc):23.04 mA cm^(−2);V_(oc):0.536 V;FF:56.2%)can be achieved because of the reduced light reflection,improved quality of junction and electrical contact,as well as the increased carrier lifetime/suppressed carrier recombination.Given the simple device configuration,facile preparation and huge potential for performance improvement,this work is believed to provide valuable exploration of developing novel solar cells.展开更多
基金This work was financially supported from the National Natural Science Foundation of China(Grant Nos.:61376068,11304132,11304133 and 61804070)the Fundamental Research Funds for the Central Universities(Grant Nos.:lzujbky-2016-112,lzujbky-2017-178 and lzujbky-2017-181).
文摘Application of two-dimensional MXene materials in photovoltaics has attracted increasing attention since the first report in 2018 due to their metallic electrical conductivity,high carrier mobility,excellent transparency,tunable work function and superior mechanical property.In this review,all developments and applications of the Ti3C2Tx MXene(here,it is noteworthy that there are still no reports on other MXenes’application in photovoltaics by far)as additive,electrode and hole/electron transport layer in solar cells are detailedly summarized,and meanwhile,the problems existing in the related studies are also discussed.In view of these problems,some suggestions are given for pushing exploration of the MXenes’application in solar cells.It is believed that this review can provide a comprehensive and deep understanding into the research status and,moreover,helps widen a new situation for the study of MXenes in photovoltaics.
基金financially supported by the Natural Science Foundation of Gansu(20JR10RA611)。
文摘In this study,a novel photovoltaic cell based on the Ti_(3)C_(2)T_(x) MXene/n-type silicon(n-Si)Schottky junction is developed by a simple solution-processed method of drop-casting the Ti_(3)C_(2)T_(x) MXene ethanol suspension onto the surface of n-Si wafers and the subsequent natural drying in air.The demonstration device with a simple configuration of Ag(top electrode)/Ti_(3)C_(2)T_(x)/n-Si/In:Ga(back electrode)delivers a power conversion efficiency(PCE)of 5.70%with a short-circuit current density(Jsc)of 20.68 mA cm^(−2),open-circuit voltage(V_(oc))of 0.530 V and fill factor(FF)of 52.0%under AM 1.5G illumination.After treating the MXene layer with the SnCl_(2) aqueous solution,an improved PCE to 6.95%(J_(sc):23.04 mA cm^(−2);V_(oc):0.536 V;FF:56.2%)can be achieved because of the reduced light reflection,improved quality of junction and electrical contact,as well as the increased carrier lifetime/suppressed carrier recombination.Given the simple device configuration,facile preparation and huge potential for performance improvement,this work is believed to provide valuable exploration of developing novel solar cells.
