Sb_(2)Se_(3)solar cells have achieved a power conversion efficiency(PCE)of over 10%.However,the serious open-circuit voltage deficit(VOC-deificit),induced by the hard-to-control crystal orientation and heterojunction ...Sb_(2)Se_(3)solar cells have achieved a power conversion efficiency(PCE)of over 10%.However,the serious open-circuit voltage deficit(VOC-deificit),induced by the hard-to-control crystal orientation and heterojunction interface reaction,limits the PCE of vapor transport deposition(VTD)processed Sb_(2)Se_(3)solar cells.To overcome the VOC-deficit problem of VTD processed Sb_(2)Se_(3)solar cells,herein,an in-situ bandgap regulation strategy is innovatively proposed to prepare a wide band gap Sb2(S,Se)3seed layer(WBSL)at CdS/Sb_(2)Se_(3)heterojunction interface to improve the PCE of Sb_(2)Se_(3)solar cells.The analysis results show that the introduced Sb2(S,Se)3seed layer can enhance the[001]orientation of Sb_(2)Se_(3)thin films,broaden the band gap of heterojunction interface,and realize a"Spike-like"conduction band alignment with ΔE_(c)=0.11 eV.In addition,thanks to the suppressed CdS/Sb_(2)Se_(3)interface reaction after WBSL application,the depletion region width of Sb_(2)Se_(3)solar cells is widened,and the quality of CdS/Sb_(2)Se_(3)interface and the carrier transporting performance of Sb_(2)Se_(3)solar cells are significantly improved as well.Moreover,the harmful Se vacancy defects near the front interface of Sb_(2)Se_(3)solar cells can be greatly diminished by WBSL.Finally,the PCE of Sb_(2)Se_(3)solar cells is improved from 7.0%to 7.6%;meanwhile the VOCis increased to 466 mV which is the highest value for the VTD derived Sb_(2)Se_(3)solar cells.This work will provide a valuable reference for the interface and orientation regulation of antimony-based chalcogenide solar cells.展开更多
利用耦合了碘化银催化过程的WRF(Weather Research and Forecast)模式,对2014年8月16日南京青奥会开幕式当天实施的人工催化作业开展数值模拟,评估催化效果并通过敏感性数值试验调查低空环境干层对催化效果的影响。结果表明,催化作业产...利用耦合了碘化银催化过程的WRF(Weather Research and Forecast)模式,对2014年8月16日南京青奥会开幕式当天实施的人工催化作业开展数值模拟,评估催化效果并通过敏感性数值试验调查低空环境干层对催化效果的影响。结果表明,催化作业产生了减雨效果,低空干区的存在是影响催化效果的关键。当低空存在深厚的相对湿度很小的干层时,催化导致减雨效果;当增加低层的相对湿度即弱化低空干层,催化减雨效果减弱甚至出现增雨效果。催化增强了雪的形成过程但减弱了雪的增长过程尤其是凝华增长,导致雪粒子浓度增加但粒径减小,融化产生更多的小雨滴增强了蒸发过程,最终导致地面降水减少。展开更多
基金supported by the National Natural Science Foundation of China(62305064)the Research Start-up Fund for Young Teachers of Fuzhou University(602592)+1 种基金the Young and Middleaged Teacher Education Research Project of Fujian Province(JAT220011)the Fujian Science&Technology Innovation Laboratory Optoelectronic Information of China(Grant No.2021ZZ124).
文摘Sb_(2)Se_(3)solar cells have achieved a power conversion efficiency(PCE)of over 10%.However,the serious open-circuit voltage deficit(VOC-deificit),induced by the hard-to-control crystal orientation and heterojunction interface reaction,limits the PCE of vapor transport deposition(VTD)processed Sb_(2)Se_(3)solar cells.To overcome the VOC-deficit problem of VTD processed Sb_(2)Se_(3)solar cells,herein,an in-situ bandgap regulation strategy is innovatively proposed to prepare a wide band gap Sb2(S,Se)3seed layer(WBSL)at CdS/Sb_(2)Se_(3)heterojunction interface to improve the PCE of Sb_(2)Se_(3)solar cells.The analysis results show that the introduced Sb2(S,Se)3seed layer can enhance the[001]orientation of Sb_(2)Se_(3)thin films,broaden the band gap of heterojunction interface,and realize a"Spike-like"conduction band alignment with ΔE_(c)=0.11 eV.In addition,thanks to the suppressed CdS/Sb_(2)Se_(3)interface reaction after WBSL application,the depletion region width of Sb_(2)Se_(3)solar cells is widened,and the quality of CdS/Sb_(2)Se_(3)interface and the carrier transporting performance of Sb_(2)Se_(3)solar cells are significantly improved as well.Moreover,the harmful Se vacancy defects near the front interface of Sb_(2)Se_(3)solar cells can be greatly diminished by WBSL.Finally,the PCE of Sb_(2)Se_(3)solar cells is improved from 7.0%to 7.6%;meanwhile the VOCis increased to 466 mV which is the highest value for the VTD derived Sb_(2)Se_(3)solar cells.This work will provide a valuable reference for the interface and orientation regulation of antimony-based chalcogenide solar cells.
文摘利用耦合了碘化银催化过程的WRF(Weather Research and Forecast)模式,对2014年8月16日南京青奥会开幕式当天实施的人工催化作业开展数值模拟,评估催化效果并通过敏感性数值试验调查低空环境干层对催化效果的影响。结果表明,催化作业产生了减雨效果,低空干区的存在是影响催化效果的关键。当低空存在深厚的相对湿度很小的干层时,催化导致减雨效果;当增加低层的相对湿度即弱化低空干层,催化减雨效果减弱甚至出现增雨效果。催化增强了雪的形成过程但减弱了雪的增长过程尤其是凝华增长,导致雪粒子浓度增加但粒径减小,融化产生更多的小雨滴增强了蒸发过程,最终导致地面降水减少。
