Electron-selective quinhydrone passivated back contact for high-efficiency silicon/organic heterojunction solar cells
Electron-selective quinhydrone passivated back contact for high-efficiency silicon/organic heterojunction solar cells
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用于高效硅/有机异质结太阳能电池的电子选择性醌氢醌钝化背接触
DOI：
10.1016/j.solmat.2018.05.041
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发表时间：
2018-10
影响因子：
6.9
通讯作者：
Jichun Ye
中科院分区：
文献类型：
--
作者：
Ziyu Zou;Weiqing Liu;Dan Wang;Zhaolang Liu;Ershuai Jiang;Sudong Wu;Juye Zhu;Wei Guo;Jiang Sheng;Jichun Ye
基于聚（3,4-乙烯二氧噻吩）：聚苯乙烯磺酸盐（PEDOT:PSS）的无掺杂硅（Si）异质结太阳能电池（hsc）的载流子输运动力学过程中，界面性质起着关键作用。在本研究中，我们利用醌（QHY）在低温下在Si表面接枝半醌（QH）来设计界面性质。该QH单层材料分别通过表面悬垂键饱和和界面偶极子实现了有效的化学钝化和场效应钝化，其少数载流子寿命高达477 μs。在前Si/PEDOT:PSS界面，qh端接的Si表面表现出更高的润湿性，从而改善了Si/PEDOT:PSS结处的接触。在Al/Si界面后方，Al膜的功函数显著减小，形成电子选择输运的欧姆接触。暗电流-电压和电容-电压的测量结果表明，电特性得到改善，载流子收集效率更高。此外，QH偶极子产生的硅带弯曲增强了Si/PEDOT:PSS hsc的整体内置电位，可获得更大的开路电压。结果表明，QHY修饰的Si/PEDOT:PSS HSC的功率转换效率为13.29%。该方法表明，有机接枝是实现高效造血干细胞界面工程的一种简单、有效、低成本的方法。
Interfacial properties play a critical role in the dynamic process of carrier transport in dopant-free silicon (Si) heterojunction solar cells (HSCs), based on the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). In this study, we use quinhydrone (QHY) to engineer the interfacial properties by grafting the semiquinone (QH) on Si surface at low temperature. The QH monolayer provides effective chemical and field-effect passivation by the surface dangling-bond saturation and its interface dipole, respectively, and results in a large minority carrier lifetime of 477 μs. At the front Si/PEDOT:PSS interface, the QH-terminated Si surface presents higher wettability for the improved contact at the Si/PEDOT:PSS junction. At the rear Al/Si interface, the work function of Al film is reduced significantly to form ohmic contact for electron-selective transport. The dark current-voltage and capacitance-voltage measurements show the improved electric characteristics with a higher carrier collection efficiency. Furthermore, the silicon band bending generated by the QH dipoles enhances the overall built-in potential of Si/PEDOT:PSS HSCs for a larger open-circuit voltage. As a result, the QHY modified Si/PEDOT:PSS HSC yields a power conversion efficiency of 13.29%. This approach demonstrates that the organic grafting is a simple, effective and low-cost method for the interface engineering to achieve high-efficiency HSCs.
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影响因子：
3.7
作者：
Meixi Chen;James H. Hack;Abhishek Iyer;K. Jones;R. Opila
通讯作者：
Meixi Chen;James H. Hack;Abhishek Iyer;K. Jones;R. Opila
DOI：
10.1002/pip.2739
发表时间：
2016-06
期刊：
Progress in Photovoltaics: Research and Applications
影响因子：
--
作者：
Yuguo Tao;V. Upadhyaya;Chia-Wei Chen;A. Payne;E. Chang;A. Upadhyaya;A. Rohatgi
通讯作者：
Yuguo Tao;V. Upadhyaya;Chia-Wei Chen;A. Payne;E. Chang;A. Upadhyaya;A. Rohatgi
DOI：
10.1002/pip.2809
发表时间：
2017-01
期刊：
Progress in Photovoltaics: Research and Applications
影响因子：
--
作者：
Chia-Wei Chen;M. Hermle;J. Benick;Yuguo Tao;Y. Ok;A. Upadhyaya;Andrew M. Tam;A. Rohatgi
通讯作者：
Chia-Wei Chen;M. Hermle;J. Benick;Yuguo Tao;Y. Ok;A. Upadhyaya;Andrew M. Tam;A. Rohatgi
影响因子：
3.2
作者：
V. Brus;M. Zellmeier;X. Zhang;S. Greil;M. Gluba;A. J. Töfflinger;J. Rappich;N. Nickel
通讯作者：
V. Brus;M. Zellmeier;X. Zhang;S. Greil;M. Gluba;A. J. Töfflinger;J. Rappich;N. Nickel
影响因子：
7.4
作者：
J. P. Thomas;Liyan Zhao;Marwa Abd-Ellah;N. Heinig;K. Leung
通讯作者：
J. P. Thomas;Liyan Zhao;Marwa Abd-Ellah;N. Heinig;K. Leung