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
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)。
文摘非掺杂异质结晶硅太阳电池是目前光伏领域的一个研究热点.本文通过简单的滴涂工艺,并经自然干燥制备了一种基于Ti_(3)C_(2)T_(x) MXene/n-Si肖特基结的新型光伏电池.此非掺杂异质结光伏电池在标准AM 1.5G模拟太阳光下短路电流密度为20.68 mA cm^(−2),开路电压为0.530 V,填充因子为52.0%,光电转换效率达到了5.70%.新型Ti_(3)C_(2)T_(x) MXene/n-Si肖特基结光伏电池具有简单的器件结构和简便的制备工艺.通过异质结界面改良,二维材料性能改善等都可大幅提高其光电转换性能.经SnCl_(2)水系溶液对MXene层进行处理后,器件光电转换效率进一步提升至6.95%(J_(sc)=23.04 mA cm^(−2),V_(oc)=0.536 V,FF=56.2%).经处理后的MXene层,可以有效减少光反射并提高光吸收.SnCl_(2)水系溶液的处理,还能进一步改善异质结质量及MXene层与顶电极的接触,进而通过抑制载流子复合提高载流子寿命.
