Pseudohalide-Exchanged Quantum Dot Solids Achieve Record Quantum Efficiency in Infrared Photovoltaics

Pseudohalide-Exchanged Quantum Dot Solids Achieve Record Quantum Efficiency in Infrared Photovoltaics

© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 29(2017), 27 vom: 15. Juli
1. Verfasser: Sun, Bin (VerfasserIn)
Weitere Verfasser: Voznyy, Oleksandr, Tan, Hairen, Stadler, Philipp, Liu, Mengxia, Walters, Grant, Proppe, Andrew H, Liu, Min, Fan, James, Zhuang, Taotao, Li, Jie, Wei, Mingyang, Xu, Jixian, Kim, Younghoon, Hoogland, Sjoerd, Sargent, Edward H
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article field-effect transistors quantum dots solar cells surface passivation thiocyanate
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520 |a Application of pseudohalogens in colloidal quantum dot (CQD) solar-cell active layers increases the solar-cell performance by reducing the trap densities and implementing thick CQD films. Pseudohalogens are polyatomic analogs of halogens, whose chemistry allows them to substitute halogen atoms by strong chemical interactions with the CQD surfaces. The pseudohalide thiocyanate anion is used to achieve a hybrid surface passivation. A fourfold reduced trap state density than in a control is observed by using a suite of field-effect transistor studies. This translates directly into the thickest CQD active layer ever reported, enabled by enhanced transport lengths in this new class of materials, and leads to the highest external quantum efficiency, 80% at the excitonic peak, compared with previous reports of CQD solar cells 
650 4 |a Journal Article 
650 4 |a field-effect transistors 
650 4 |a quantum dots 
650 4 |a solar cells 
650 4 |a surface passivation 
650 4 |a thiocyanate 
700 1 |a Voznyy, Oleksandr  |e verfasserin  |4 aut 
700 1 |a Tan, Hairen  |e verfasserin  |4 aut 
700 1 |a Stadler, Philipp  |e verfasserin  |4 aut 
700 1 |a Liu, Mengxia  |e verfasserin  |4 aut 
700 1 |a Walters, Grant  |e verfasserin  |4 aut 
700 1 |a Proppe, Andrew H  |e verfasserin  |4 aut 
700 1 |a Liu, Min  |e verfasserin  |4 aut 
700 1 |a Fan, James  |e verfasserin  |4 aut 
700 1 |a Zhuang, Taotao  |e verfasserin  |4 aut 
700 1 |a Li, Jie  |e verfasserin  |4 aut 
700 1 |a Wei, Mingyang  |e verfasserin  |4 aut 
700 1 |a Xu, Jixian  |e verfasserin  |4 aut 
700 1 |a Kim, Younghoon  |e verfasserin  |4 aut 
700 1 |a Hoogland, Sjoerd  |e verfasserin  |4 aut 
700 1 |a Sargent, Edward H  |e verfasserin  |4 aut 
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773 1 8 |g volume:29  |g year:2017  |g number:27  |g day:15  |g month:07 
856 4 0 |u http://dx.doi.org/10.1002/adma.201700749  |3 Volltext 
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