Controlling the Electron Coupled State in the Superlattice of PbS Quantum Dots by Replacing Ligands

被引：8

作者：

Mukai, Kohki ^{[1
]}

Suetsugu, Fumimasa ^{[1
]}

Niwa, Keisuke ^{[1
]}

机构：

[1] Yokohama Natl Univ, Grad Sch Engn, Yokohama, Kanagawa 2408501, Japan

来源：

IEEE TRANSACTIONS ON NANOTECHNOLOGY | 2017年 / 16卷 / 04期

关键词：

Photoluminescence; photovoltaic cells; quantum dots; semiconductor films; thin films; HYBRID SOLAR-CELLS; NANOCRYSTALS; NANOPARTICLES; EFFICIENCY; EXCHANGE; PYRIDINE; BEHAVIOR; FILMS;

D O I：

10.1109/TNANO.2017.2709332

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report that the emission wavelength of a superlattice of colloidal PbS quantum dots (QDs) was greatly lengthened on replacing their ligands with shorter ones. The long-period close packing was achieved with the aid of a pyramidal hole array prepared on a Si substrate using selective wet etching. The emission energy shift at the ground state was accompanied by an increase in the emission lifetime. These emission properties were attributed to the significant delocalization of the carrier wave function in the QD superlattice having long periodicity.

引用

收藏

页码：600 / 605

页数：6

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