Dual-Band Plasmonic Perfect Absorber Based on the Hybrid Halide Perovskite in the Communication Regime

Round 1

Reviewer 1 Report

the key reference [34] J.D. Jackson, Wiley, 52, 1-30 (1998) does not exists

Author Response

Thank you for your comment. This reference is from a book writing by J. D. Jackson, whose name is Classical Electrodynamics. We have revised this reference in the new manuscript for easy search.

• D. Jackson, Classical Electrodynamics, 3rd Edition, Wiley (1998).

Reviewer 2 Report

Figure 4 is missing, please add a compatible file.

Author Response

Thanks for the reviewer’s comment. Figure 4 may be lost during the previous upload submission, we have added it in the new manuscript.

Reviewer 3 Report

The authors present a study of dual-band plasmonic perfect absorber based on the hybrid halide perovskite in the communication regime. The study is interesting and novel. They demonstrate that the designed absorber can keep good performance under wide angles of incidence and manifested polarization correlation and that the physical mechanism in this absorber can also be utilized to strengthen the absorption of other halide perovskites.

The literature review is however missing some important papers in this field, such as for example https://doi.org/10.1021/nn3026468

The language should also be checked and improved as there are spelling errors, e.g., line 60: As Seen from --> As seen from

Also in Figures, there are symbols not written in italic (e.g. in Fig. 1 symbols x,y,z), space is missing between 10 and nm in Fig. 1. The same errors are also found in the text and in figure captions.

On the other hand, nm and Ag are written italic in the text, which is not correct.

All Figures should be carefully checked and improved. Fig. 4. cannot be opened. It is difficult to review the paper with missing Figures.

The text of the manuscript should also be carefully checked for grammar.

Author Response

Please see the attachment

Author Response File: Author Response.doc

Reviewer 4 Report

The manuscript “Dual-band plasmonic perfect absorber based on the hybrid halide perovskite in the communication regime” relies on the use of a (CH3NH3)PbI3 layer sandwiched by two anisotropic lossless hexagonal boron nitride (h-BN) films.

Overall, the manuscript is well prepared, well organized but few points needs improvement before publication.

• At the abstract, the sentence “Dual-band perfect absorption peaks are formed in the communication regime through the use of finite-difference time-domain (FDTD) methods” is confused. Why the peaks are formed? Should the authors intend to say “the theoretical results were obtained using finite-difference time-domain (FDTD) methods”?

• The abstract should contain information about how the absorption of (CH3NH3)PbI3 is increased.

• Figure 1 is in the Introduction section. It should appear in the structure design after being mentioned in the text.

• Figure 4 was unable to read. I would like to review this figure after being corrected.

• What is the effect of changing the thickness of the hexagonal boron nitride (h-BN) layers? Can be optimized? This study should be added to the manuscript.

Author Response

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Author Response File: Author Response.doc

Reviewer 5 Report

This paper designs an adjustable dual-band perfect absorber based on (CH₃NH₃)PbI₃ in the communication regime. Dual-band perfect absorption peaks are formed in the communication regime through the use of finite-difference time-domain (FDTD) methods. It is discussed an enhance of the optical absorption of (CH₃NH₃)PbI₃ in the near-infrared regime. Then, design and investigation of a (CH₃NH₃)PbI₃-based optical absorber combined with metal metamaterial in the communication regime are performed. The first-principles are used to calculate the dielectric function of (CH₃NH₃)PbI₃. To regret, the paper has very significant omissions:

1. Plots in Fig. 4 are absent totally, therefore corresponding discussion has not sense.
2. The values and designations under Fig. 3 – P = 800 nm, W = 600 nm, h = 20 nm do not coincide with corresponding parameters in the Lines 71, 72 - w = 550 nm, p = 800 nm, h = 15 nm. These different designations exist also further into text.
3. The declared increased absorption of (CH₃NH₃)PbI₃ to 43.1% (Lines 17, 80) do not coincide with the same value of 41.3% (Lines 112, 194). What is right?

Author Response

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Author Response File: Author Response.doc

Round 2

Reviewer 5 Report

The paper could be accepted in present form.