Comparative advantages of Zn-Cu-In-S alloy QDs in the construction of quantum dot-sensitized solar cells.
Comparative advantages of Zn-Cu-In-S alloy QDs in the construction of quantum dot-sensitized solar cells.
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Zn-Cu-In-S合金量子点在构建量子点敏化太阳能电池中的比较优势
DOI：
10.1039/c7ra12321c
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发表时间：
2018-01-16
期刊：
影响因子：
3.9
通讯作者：
Zhong, Xinhua
中科院分区：
文献类型：
--
作者：
Yue, Liang;Rao, Huashang;Du, Jun;Pan, Zhenxiao;Yu, Juan;Zhong, Xinhua
量子点集光材料的合金结构有利于抑制不需要的电荷复合以及加速电荷提取，并因此改善所得太阳能电池器件的光伏性能。在此，Zn-Cu-In-S（ZCIS）合金QD作为光捕获敏化剂材料在量子点敏化太阳能电池（QDSC）的构造中的优点与核/壳结构的CIS/ZnS以及原始CIS QD进行了比较。以Zn-Cu-In-S合金量子点作为光敏剂的量子点太阳能电池在AM 1.5G的单次太阳照射下实现了8.47%的平均功率转换效率（PCE）（Voc = 0.613 V，Jsc = 22.62 mA cm-2，FF = 0.610），与CIS/ZnS和CIS基太阳能电池相比分别提高了21%和82%。与普通CIS和核/壳结构CIS/ZnS组装的电池器件相比，ZCIS QDSC的增强的光伏性能主要归因于更快的光子产生的电子从QD到TiO 2衬底的注入速率，以及有效抑制电荷复合，如入射光子-电流转换效率（IPCE）、开路电压衰减（MOCVD）、以及电化学阻抗谱（EIS）测量。得益于加速的电子注入和延迟的电荷复合，Zn-Cu-In-S合金量子点基QDSC的PCE达到8.55%，分别比CIS/ZnS和原始CIS量子点基太阳能电池高21%和82%。
Alloyed structures of quantum dot light-harvesting materials favor the suppression of unwanted charge recombination as well as acceleration of the charge extraction and therefore the improvement of photovoltaic performance of the resulting solar cell devices. Herein, the advantages of Zn–Cu–In–S (ZCIS) alloy QD serving as light-harvesting sensitizer materials in the construction of quantum dot-sensitized solar cells (QDSCs) were compared with core/shell structured CIS/ZnS, as well as pristine CIS QDs. The built QDSCs with alloyed Zn–Cu–In–S QDs as photosensitizer achieved an average power conversion efficiency (PCE) of 8.47% (Voc = 0.613 V, Jsc = 22.62 mA cm−2, FF = 0.610) under AM 1.5G one sun irradiation, which was enhanced by 21%, and 82% in comparison to those of CIS/ZnS, and CIS based solar cells, respectively. In comparison to cell device assembled by the plain CIS and core/shell structured CIS/ZnS, the enhanced photovoltaic performance in ZCIS QDSCs is mainly ascribed to the faster photon generated electron injection rate from QD into TiO2 substrate, and the effective restraint of charge recombination, as confirmed by incident photon-to-current conversion efficiency (IPCE), open-circuit voltage decay (OCVD), as well as electrochemical impedance spectroscopy (EIS) measurements. Benefiting from the accelerative electron injection and retarded charge recombination, Zn–Cu–In–S alloy QD based QDSC achieved a PCE of 8.55%, which is 21%, and 82% higher than those of CIS/ZnS, and pristine CIS QDs based solar cells, respectively.
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表面%20工程%20of%20PbS%20量子%20dot%20敏化%20太阳能%20细胞%20with%20a%20转换%20效率%20超越%207%
影响因子：
11.9
作者：
Jiao, Shuang;Wang, Jin;Zhong, Xinhua
通讯作者：
Zhong, Xinhua
影响因子：
3.7
作者：
Hodes, Gary
通讯作者：
Hodes, Gary
影响因子：
17.1
作者：
Akkerman, Quinten A.;Genovese, Alessandro;Lesnyak, Vladimir
通讯作者：
Lesnyak, Vladimir
影响因子：
17.1
作者：
Gonzalez-Pedro, Victoria;Xu, Xueqing;Bisquert, Juan
通讯作者：
Bisquert, Juan
影响因子：
15
作者：
Bisquert, J;Zaban, A;Mora-Seró, I
通讯作者：
Mora-Seró, I