Observation of hot carriers existing in Ag2S nanoparticles and its implication on solar cell application

S. Lin, Y. Feng, X. Wen, T. Harada, T. W. Kee, S. Huang, S. Shrestha, G. Conibeer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Silver sulfide (Ag2S) nanoparticle (NP) is a promising material for quantum-dot-based hot-carrier solar cell, yet the hot carrier dynamics of the material has not been thoroughly studied for this purpose. In this work, carrier cooling dynamics of Ag2S NP thin film were measured and analyzed using the transient absorption (TA) spectrometer. The NPs exhibit a relatively high carrier temperature and long carrier cooling time. This result was further verified by the carrier temperature extraction from steady-state photoluminescence (ssPL) spectrum. The long carrier cooling time in Ag2S NPs can potentially lead to efficiency of 33.6%, demonstrating potential application for the high-efficiency hot-carrier solar cell.

Original languageEnglish
Pages (from-to)10199-10205
Number of pages7
JournalJournal of Physical Chemistry C
Volume120
Issue number19
DOIs
Publication statusPublished - 19 May 2016
Externally publishedYes

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