A Resonance-Shifting Hybrid n-Type Layer for Boosting Near-Infrared Response in Highly Efficient Colloidal Quantum Dots Solar Cells

Se-Woong Baek; Jung Hoon Song; Woong Choi; Hyunjoon Song; Sohee Jeong; Jung-Yong Lee

doi:10.1002/adma.201503642

A Resonance-Shifting Hybrid n-Type Layer for Boosting Near-Infrared Response in Highly Efficient Colloidal Quantum Dots Solar Cells

Adv Mater. 2015 Dec 22;27(48):8102-8. doi: 10.1002/adma.201503642. Epub 2015 Nov 2.

Authors

Se-Woong Baek¹, Jung Hoon Song^{2

3}, Woong Choi⁴, Hyunjoon Song⁴, Sohee Jeong^{2

5}, Jung-Yong Lee¹

Affiliations

¹ Graduate School of Energy, Environment, Water and Sustainability (EEWS), Graphene Research Center, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, South Korea.
² Nanomechanical Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Daejeon, 305-343, South Korea.
³ Graduate School of Nanoscience and Technology (GSNT), KAIST, Daejeon, 305-701, South Korea.
⁴ Department of Chemistry, Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, South Korea.
⁵ Department of Nanomechatronics, Korea University of Science and Technology (UST), Daejeon, 305-350, South Korea.

PMID: 26523933
DOI: 10.1002/adma.201503642

Abstract

A new configuration of a plasmonic quantum dots solar structure is proposed. Gold-silver core-shell metal nanoparticles (Au@Ag NCs) are incorporated into the TiO2 layer (Au@Ag NCs-HL) of PbS-based solar cells. The TiO2 layer enables the Au@Ag NCs to have broad plasmonic responses and the external quantum efficiency and absorption of the plasmonic devices are significantly enhanced. The electrical performance of the solar cells is also improved.

Keywords: core-shell nanoparticles; metal nanoparticles; plasmonics; quantum dots solar cells; resonance-shifting.