Improving of Sensitivity of PbS Quantum Dot Based SWIR Photodetector Using P3HT.

Kyeong-Ho Seo, Jaewon Jang, In Man Kang, Jin-Hyuk Bae

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Article in Materials (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

4 authors.

Kyeong-Ho SeoSchool of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Korea.

Jaewon JangSchool of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Korea.ORCID 0000-0003-1908-0015

In Man KangSchool of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Korea.

Jin-Hyuk BaeSchool of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Korea.ORCID 0000-0003-3217-1309

Funding

Ministry of Education, South Korea 21A20131600011Ministry of Science and ICT, South Korea 2018R1A2B6008815

6 · The paper itself

Abstract

In this study, we improved the photosensitivity of the lead sulfide quantum dot (PbS QD)-based shortwave infrared (SWIR: 1.0-2.5 μm) photodetector by blending poly(3-hexylthiophene-2,5-diyl) (P3HT) with PbS QD. The PbS QD used for SWIR photoactive layer showed an absorption peak at 1410 nm. In addition, by using zinc oxide nanoparticles (ZnO NPs) as an interlayer, we obtained the stable current characteristics of our device. To confirm the effectiveness of P3HT on the PbS QD-based SWIR photodetector, we compared the electrical characteristics of a PbS QD-based device with a hybrid P3HT:PbS QD-based device. In the reverse bias region, the current on/off ratio of the PbS QD-based device was 1.3, whereas the on/off ratio of the hybrid P3HT:PbS QD-based device was 2.9; 2.2 times higher than the PbS QD-based device. At -1 V, the on/off ratio of the PbS QD-based device was 1.3 and the on/off ratio of the hybrid P3HT:PbS QD-based device was 3.4; 2.6 times higher than the PbS QD-based device. The fabricated P3HT:PbS QD-based device had the highest on/off ratio when -1 V voltage was applied.

Indexed as

current on/off ratiolead sulfide quantum dotsphotosensitivitypoly(3-hexylthiophene-2,5-diyl)shortwave infrared photodetector

Identifiers

PMID33803693

DOI10.3390/ma14061488

PMCPMC8003095

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.