公开(公告)号：US20120103404A1

公开(公告)日：2012-05-03

申请号：US13274675

申请日：2011-10-17

申请人： Nobuhiro Fuke ,  Alexey Y. Koposov ,  Milan Sykora ,  Laura B. Hoch ,  Virginia W. Manner

发明人： Nobuhiro Fuke ,  Alexey Y. Koposov ,  Milan Sykora ,  Laura B. Hoch ,  Virginia W. Manner

IPC分类号： H01L31/0725 ,  H01L29/66

CPC分类号： H01G9/2031 ,  H01G9/2054 ,  H01M14/005 ,  Y02E10/542

摘要： Photoelectrochemical solar cells (PECs) consisting of a photoanode were prepared by direct deposition of independently synthesized CdSe nanocrystal quantum dots (NQDs) onto a nanocrystalline TiO2 film (NQD/TiO2), aqueous Na2S or Li2S electrolyte and a Pt counter electrode. The light harvesting efficiency (LHE) of the NQD/TiO2 photoanode is significantly enhanced when the NQD surface passivation is changed from tri-n-octylphosphine oxide (TOPO) to a smaller ligand (e.g. n-butylamine (BA)). Using NQDs with a shorter passivating ligand, BA, leads to a significant enhancement in both the electron injection efficiency at the NQD/TiO2 interface and charge collection efficiency at the NQD/electrolyte interface, with the latter attributed mostly to a more efficient diffusion of the electrolyte through the pores of the photoanode. By utilizing BA capped NQDs and aqueous Li2S as an electrolyte, it is possible to achieve about 100% internal quantum efficiency of photon-to-electron conversion, matching the performance of dye sensitized solar cells.

摘要翻译： 通过将独立合成的CdSe纳米晶体量子点（NQD）直接沉积到纳米晶体TiO 2膜（NQD / TiO 2），Na 2 S或Li 2 S水溶液和Pt对电极上来制备由光电阳极组成的光电化学太阳能电池（PEC）。 当NQD表面钝化从三正辛基氧化膦（TOPO）改变为较小配体（例如正丁胺（BA））时，NQD / TiO2光阳极的光收获效率（LHE）显着提高。 使用具有更短钝化配体的NQD，BA导致在NQD / TiO 2界面处的电子注入效率和NQD /电解质界面处的电荷收集效率的显着增强，后者主要归因于更有效的扩散 电解质通过光阳极的孔。 通过使用BA封端的NQD和Li2S水溶液作为电解质，可以实现大约100％的光子到电子转换的内部量子效率，匹配染料敏化太阳能电池的性能。

公开(公告)号：US08911887B2

公开(公告)日：2014-12-16

申请号：US13274071

申请日：2011-10-14

申请人： Nobuhiro Fuke ,  Alexey Y. Koposov ,  Milan Sykora ,  Laura Hoch

发明人： Nobuhiro Fuke ,  Alexey Y. Koposov ,  Milan Sykora ,  Laura Hoch

IPC分类号： H01G9/20 ,  B82Y30/00

CPC分类号： H01G9/2027 ,  B82Y30/00 ,  H01G9/2031 ,  H01G9/2054 ,  Y02E10/542 ,  Y10S977/774 ,  Y10S977/827 ,  Y10S977/948 ,  Y10T428/2993

摘要： Composite materials useful for devices such as photoelectrochemical solar cells include a substrate, a metal oxide film on the substrate, nanocrystalline quantum dots (NQDs) of lead sulfide, lead selenide, and lead telluride, and linkers that attach the NQDs to the metal oxide film. Suitable linkers preserve the 1s absorption peak of the NQDs. A suitable linker has a general structure A-B-C where A is a chemical group adapted for binding to a MOx and C is a chemical group adapted for binding to a NQD and B is a divalent, rigid, or semi-rigid organic spacer moiety. Other linkers that preserve the 1s absorption peak may also be used.

摘要翻译： 可用于诸如光电化学太阳能电池的器件的复合材料包括基底，基底上的金属氧化物膜，硫化铅的纳米晶体量子点（NQD），硒化铅和碲化铅，以及将NQDs连接到金属氧化物膜的接头 。 合适的接头保留NQD的1s吸收峰。 合适的接头具有一般结构A-B-C，其中A是适用于与MOx结合的化学基团，C是适于与NQD结合的化学基团，B是二价，刚性或半刚性有机间隔物部分。 也可以使用保持1s吸收峰的其它接头。

公开(公告)号：US20130284249A1

公开(公告)日：2013-10-31

申请号：US13274071

申请日：2011-10-14

申请人： Nobuhiro Fuke ,  Alexey Y. Koposov ,  Milan Sykora ,  Laura Hoch

发明人： Nobuhiro Fuke ,  Alexey Y. Koposov ,  Milan Sykora ,  Laura Hoch

IPC分类号： H01G9/20

CPC分类号： H01G9/2027 ,  B82Y30/00 ,  H01G9/2031 ,  H01G9/2054 ,  Y02E10/542 ,  Y10S977/774 ,  Y10S977/827 ,  Y10S977/948 ,  Y10T428/2993

摘要： Composite materials useful for devices such as photoelectrochemical solar cells include a substrate, a metal oxide film on the substrate, nanocrystalline quantum dots (NQDs) of lead sulfide, lead selenide, and lead telluride, and linkers that attach the NQDs to the metal oxide film. Suitable linkers preserve the 1s absorption peak of the NQDs. A suitable linker has a general structure A-B-C where A is a chemical group adapted for binding to a MOx and C is a chemical group adapted for binding to a NQD and B is a divalent, rigid, or semi-rigid organic spacer moiety. Other linkers that preserve the 1s absorption peak may also be used.

摘要翻译： 可用于诸如光电化学太阳能电池的器件的复合材料包括基底，基底上的金属氧化物膜，硫化铅的纳米晶体量子点（NQD），硒化铅和碲化铅，以及将NQDs连接到金属氧化物膜的接头 。 合适的接头保留NQD的1s吸收峰。 合适的接头具有一般结构A-B-C，其中A是适用于与MOx结合的化学基团，C是适于与NQD结合的化学基团，B是二价，刚性或半刚性有机间隔物部分。 也可以使用保持1s吸收峰的其它接头。