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Proceedings Paper

Efficient near-infrared emission at 1.3 micron range of narrow-band phthalocyanines thin-films
Author(s): Xiaoke Hou; Xiguang Du; Chunyu Ma; Shengli Zhang; Lei Wang; Yong Yao
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Paper Abstract

Organic near-infrared (NIR) materials are extremely rare and receive increasing attention. The optical properties of organic compounds are determined by their energy band gap. Considering several design factors for tuning the energy band gap, we have designed and synthesized a new aza metal-free phthalocyanine containing four 1,10-phenanthroline subunits. The maximum absorption wavelength reaches beyond 1 micron for the aggregated solid samples. Efficient NIR emission at 1.3 micron range was observed from the solution deposited thin-film. More meaningfully, 1.3 micron range is zero dispersion wavelengths for fiber transmission. The great red shift in the optical activity can be attributed to the extension the conjugated system of phthalocyanine molecules and the peripheral electrophilic subunits. The cyclic voltammetry measurement is performed to obtain proof on the energy band gap, which is determined to be 1.1eV. Such a narrow band-gap further explains the NIR optical activity. This paper provides a new thought and experimental data for developing organic NIR materials.

Paper Details

Date Published:
Proc. SPIE 8829, Organic Light Emitting Materials and Devices XVII, 88291O; doi: 10.1117/12.2022178
Show Author Affiliations
Xiaoke Hou, Harbin Institute of Techonlogy Shenzhen (China)
NeoPhotonics (China)
Xiguang Du, Northeast Normal Univ. (China)
Chunyu Ma, Northeast Normal Univ. (China)
Shengli Zhang, NeoPhotonics Corp. (China)
Lei Wang, NeoPhotonics Corp. (China)
Yong Yao, Harbin Institute of Techonlogy Shenzhen (China)

Published in SPIE Proceedings Vol. 8829:
Organic Light Emitting Materials and Devices XVII
Franky So; Chihaya Adachi, Editor(s)

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