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Photonics
Volume 9
Issue 12
10.3390/photonics9120996
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Article

Photoelectron Yield Spectroscopy and Transient Photocurrent Analysis for Triphenylamine-Based Photorefractive Polymer Composites

by
Naoto Tsutsumi
1,*,
Yusuke Mizuno
2,
Boaz Jessie Jackin
3,
Kenji Kinashi
1,
Takafumi Sassa
4,
Ha Ngoc Giang
5 and
Wataru Sakai
1
1
Faculty of Materials Science & Engineering, Kyoto Institute of Technology, Sakyo, Kyoto 606-8585, Japan
2
Master’s Program of Innovative Materials, Graduate School of Science and Technology, Kyoto Institute of Technology, Sakyo, Kyoto 606-8585, Japan
3
Materials Innovation Laboratory, Kyoto Institute of Technology, Sakyo, Kyoto 606-8585, Japan
4
Photonics Control Technology Team, RIKEN Center for Advanced Photonics, Wako 351-0198, Japan
5
Faculty of Chemical Technology, Ho Chi Minh City University of Food Industry, Ho Chi Minh City 72000, Vietnam
*
Author to whom correspondence should be addressed.
Photonics 2022, 9(12), 996; https://doi.org/10.3390/photonics9120996
Submission received: 17 November 2022 / Revised: 11 December 2022 / Accepted: 13 December 2022 / Published: 17 December 2022
(This article belongs to the Special Issue Photorefractive Photonics and Beyond)
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Abstract

The photocurrent for poly(4-(dimethylamino)benzyl acrylate) (PDAA) photorefractive composites with (4-(diphenylamino)phenyl)methanol (TPAOH) photoconductive plasticizers was measured to be two orders of magnitude higher than that obtained with (2,4,6-trimethylphenyl)diphenylamine (TAA) photoconductive plasticizers. In this study, to determine the reason for the large difference in the photocurrent measured for PDAA photorefractive composites containing two different photoconductive plasticizers of TPAOH and TAA, the highest occupied molecular orbital (HOMO) level identical to the ionization potential (Ip) and the width of the density of states (DOS) were evaluated using photoelectron yield spectroscopy, and the transient photocurrent was analyzed using a two-trap model. The estimated hole mobility was also rationalized using a Bässler formalism together with the energetic disorder of the width of the DOS and the positional disorder of the scattering situation for carrier hopping.
Keywords: photorefractivity; transient photocurrent; photoelectron yield spectroscopy; width of the density of states; quantum efficiency for photocarrier generation; hole mobility; trap parameters photorefractivity; transient photocurrent; photoelectron yield spectroscopy; width of the density of states; quantum efficiency for photocarrier generation; hole mobility; trap parameters

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MDPI and ACS Style

Tsutsumi, N.; Mizuno, Y.; Jackin, B.J.; Kinashi, K.; Sassa, T.; Giang, H.N.; Sakai, W. Photoelectron Yield Spectroscopy and Transient Photocurrent Analysis for Triphenylamine-Based Photorefractive Polymer Composites. Photonics 2022, 9, 996. https://doi.org/10.3390/photonics9120996

AMA Style

Tsutsumi N, Mizuno Y, Jackin BJ, Kinashi K, Sassa T, Giang HN, Sakai W. Photoelectron Yield Spectroscopy and Transient Photocurrent Analysis for Triphenylamine-Based Photorefractive Polymer Composites. Photonics. 2022; 9(12):996. https://doi.org/10.3390/photonics9120996

Chicago/Turabian Style

Tsutsumi, Naoto, Yusuke Mizuno, Boaz Jessie Jackin, Kenji Kinashi, Takafumi Sassa, Ha Ngoc Giang, and Wataru Sakai. 2022. "Photoelectron Yield Spectroscopy and Transient Photocurrent Analysis for Triphenylamine-Based Photorefractive Polymer Composites" Photonics 9, no. 12: 996. https://doi.org/10.3390/photonics9120996

APA Style

Tsutsumi, N., Mizuno, Y., Jackin, B. J., Kinashi, K., Sassa, T., Giang, H. N., & Sakai, W. (2022). Photoelectron Yield Spectroscopy and Transient Photocurrent Analysis for Triphenylamine-Based Photorefractive Polymer Composites. Photonics, 9(12), 996. https://doi.org/10.3390/photonics9120996

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