Effect of miniband formation in a quantum dot super lattice fabricated by combination of bio-template and neutral beam etching for high efficiency quantum dot solar cells

Mohammad Maksudur Rahman; Makoto Igarashi; Weiguo Hu; Mohd Erman Syazwan; Takeru Okada; Yusuke Hoshi; Noritaka Usami; Seiji Samukawa

doi:10.1109/PVSC.2014.6925105

Effect of miniband formation in a quantum dot super lattice fabricated by combination of bio-template and neutral beam etching for high efficiency quantum dot solar cells

Mohammad Maksudur Rahman, Makoto Igarashi, Weiguo Hu, Mohd Erman Syazwan, Takeru Okada, Yusuke Hoshi, Noritaka Usami, Seiji Samukawa

Innovative Energy Research Center

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We studied the fabrication of a true silicon three-dimensional quantum dot super lattice (3D QDSL) by combination of bio-template and neutral beam etching, characterized it with respect to its photovoltaic performance, and realized its quantum effect. The existence of Si QDs was confirmed by using a bright field scanning transmission electron micrograph, and then a theoretical study proved the miniband formation inside our 3D QDSL. A drastic improvement in the photocurrent and efficiency of the p-i-n solar cell with QDSL showed a large electron transport and low series resistance by the vertical miniband formation inside the super lattice structure. Wide range of optical transition by QDs array in the QDSL was also observed in the external quantum efficiency of the QD solar cell.

Original language	English
Title of host publication	2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1092-1095
Number of pages	4
ISBN (Electronic)	9781479943982
DOIs	https://doi.org/10.1109/PVSC.2014.6925105
Publication status	Published - 2014 Oct 15
Event	40th IEEE Photovoltaic Specialist Conference, PVSC 2014 - Denver, United States Duration: 2014 Jun 8 → 2014 Jun 13

Publication series

Name	2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014

Other

Other	40th IEEE Photovoltaic Specialist Conference, PVSC 2014
Country/Territory	United States
City	Denver
Period	14/6/8 → 14/6/13

Keywords

mini band
quantum dot
silicon
super lattice

ASJC Scopus subject areas

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/PVSC.2014.6925105

Cite this

Maksudur Rahman, M., Igarashi, M., Hu, W., Syazwan, M. E., Okada, T., Hoshi, Y., Usami, N., & Samukawa, S. (2014). Effect of miniband formation in a quantum dot super lattice fabricated by combination of bio-template and neutral beam etching for high efficiency quantum dot solar cells. In 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014 (pp. 1092-1095). [6925105] (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2014.6925105

Effect of miniband formation in a quantum dot super lattice fabricated by combination of bio-template and neutral beam etching for high efficiency quantum dot solar cells. / Maksudur Rahman, Mohammad; Igarashi, Makoto; Hu, Weiguo et al.

2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 1092-1095 6925105 (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Maksudur Rahman, M, Igarashi, M, Hu, W, Syazwan, ME, Okada, T, Hoshi, Y, Usami, N & Samukawa, S 2014, Effect of miniband formation in a quantum dot super lattice fabricated by combination of bio-template and neutral beam etching for high efficiency quantum dot solar cells. in 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014., 6925105, 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014, Institute of Electrical and Electronics Engineers Inc., pp. 1092-1095, 40th IEEE Photovoltaic Specialist Conference, PVSC 2014, Denver, United States, 14/6/8. https://doi.org/10.1109/PVSC.2014.6925105

Maksudur Rahman M, Igarashi M, Hu W, Syazwan ME, Okada T, Hoshi Y et al. Effect of miniband formation in a quantum dot super lattice fabricated by combination of bio-template and neutral beam etching for high efficiency quantum dot solar cells. In 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc. 2014. p. 1092-1095. 6925105. (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014). doi: 10.1109/PVSC.2014.6925105

Maksudur Rahman, Mohammad ; Igarashi, Makoto ; Hu, Weiguo et al. / Effect of miniband formation in a quantum dot super lattice fabricated by combination of bio-template and neutral beam etching for high efficiency quantum dot solar cells. 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. pp. 1092-1095 (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014).

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abstract = "We studied the fabrication of a true silicon three-dimensional quantum dot super lattice (3D QDSL) by combination of bio-template and neutral beam etching, characterized it with respect to its photovoltaic performance, and realized its quantum effect. The existence of Si QDs was confirmed by using a bright field scanning transmission electron micrograph, and then a theoretical study proved the miniband formation inside our 3D QDSL. A drastic improvement in the photocurrent and efficiency of the p-i-n solar cell with QDSL showed a large electron transport and low series resistance by the vertical miniband formation inside the super lattice structure. Wide range of optical transition by QDs array in the QDSL was also observed in the external quantum efficiency of the QD solar cell.",

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AU - Syazwan, Mohd Erman

AU - Okada, Takeru

AU - Hoshi, Yusuke

AU - Usami, Noritaka

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AB - We studied the fabrication of a true silicon three-dimensional quantum dot super lattice (3D QDSL) by combination of bio-template and neutral beam etching, characterized it with respect to its photovoltaic performance, and realized its quantum effect. The existence of Si QDs was confirmed by using a bright field scanning transmission electron micrograph, and then a theoretical study proved the miniband formation inside our 3D QDSL. A drastic improvement in the photocurrent and efficiency of the p-i-n solar cell with QDSL showed a large electron transport and low series resistance by the vertical miniband formation inside the super lattice structure. Wide range of optical transition by QDs array in the QDSL was also observed in the external quantum efficiency of the QD solar cell.

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Effect of miniband formation in a quantum dot super lattice fabricated by combination of bio-template and neutral beam etching for high efficiency quantum dot solar cells

Abstract

Publication series

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Keywords

ASJC Scopus subject areas

UN SDGs

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