| 长余辉荧光结构层增强CdS/CdSe量子点敏化太阳能电池（英文） |
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| 作者姓名： | 邓云龙 路舒琦 徐知源 张家驰 马飞 彭尚龙 |
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| 作者单位： | National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology |
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| 基金项目： | financially supported by the National Natural Science Foundation of China (61376011, 51402141 and 61604086);Gansu Provincial Natural Science Foundation (17JR5RA198);the Fundamental Research Funds for the Central Universities (LZUJBKY-2018-119 and LZUJBKY-2018-CT08);Shenzhen Science and Technology Innovation Committee (JCYJ20170818155813437);the Key Areas Scientific and Technological Research Projects in Xinjiang Production and Construction Corps (2018AB004) |
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| 摘 要： | 光吸收在提高量子点敏化太阳能电池(QDSSCs)的功率转换效率(PCE)方面起着至关重要的作用.本研究采用简单的刮涂法将多功能长余辉荧光层(LPP)引入到CdS/CdSe QDSSCs中.LPP层不仅可以增强光的捕获,还可以加速CdS/CdSe QDSSCs的电荷转移.因此,LPP层的引入有效地提高了CdS/CdSe QDSSCs的短路电流密度和相应的PCE.当采用橄榄绿荧光层时,PCE高达5.07%,与常规CdS/CdSe QDSSCs(4.08%)的功率转换效率相比,PCE提高了24%.此外,经过一分钟的太阳光照射(AM 1.5G,100 mW cm^-2),由于LPPs的储能特性,太阳能电池可在黑暗中继续工作.本研究不仅为QDSSCs提供了提高PCE的有效方法,而且为全天候QDSSCs的制备提供了可能.
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| 关 键 词： | 功率转换效率 量子点敏化太阳能电池 短路电流密度 电荷转移 在黑暗中 储能特性 CDSE 刮涂法 |
Enhanced performance of CdS/CdSe quantum dotsensitized solar cells by long-persistence phosphors structural layer |
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| Authors: | Yunlong Deng Shuqi Lu Zhiyuan Xu Jiachi Zhang Fei Ma Shanglong Peng |
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| Affiliation: | (National 8c Local Joint Engineering Laboratory for Optical Conversion Materials and Technology,School of Physical Science and Technology,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | Light absorption plays an important role in improving the power conversion efficiency(PCE)of quantum dot-sensitized solar cells(QDSSCs).In this study,a multifunctional long-persistence phosphor(LPP)layer was introduced into the CdS/CdSe QDSSCs via a simple doctor blade method.The LPP layer can simultaneously improve the light harvesting and photo charge transfer in CdS/CdSe QDSSCs.As a result,their short-circuit current and corresponding PCE are effectively enhanced.The PCE can reach up to 5.07%,which is about 24%larger than that of the conventional CdS/CdSe QDSSCs without LPP layer.The solar cells can work in dark for a while due to the long-lasting fluorescence of the LPP layer.This research provides an effective way to improve the PCE of QDSSCs,and finds the possibility for all-weather QDSSCs. |
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| Keywords: | quantum dot-sensitized solar cells all-weather solar cells long-persistence phosphors power conversion efficiency |
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