Next Article in Journal
Titanium Dioxide Nanoparticles Alter the Cellular Phosphoproteome in A549 Cells
Previous Article in Journal
Multifunctional Nanocarriers for Lung Drug Delivery
Open AccessArticle

Performance Enhancement of Ultra-Thin Nanowire Array Solar Cells by Bottom Reflectivity Engineering

1
State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
2
ITMO University, St. Petersburg 197101, Russia
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(2), 184; https://doi.org/10.3390/nano10020184
Received: 16 December 2019 / Revised: 18 January 2020 / Accepted: 20 January 2020 / Published: 21 January 2020
(This article belongs to the Section Nanophotonics Materials and Devices)
A bottom-reflectivity-enhanced ultra-thin nanowire array solar cell is proposed and studied by 3D optoelectronic simulations. By inserting a small-index MgF2 layer between the polymer and substrate, the absorption is significantly improved over a broad wavelength range due to the strong reabsorption of light reflected at the polymer/MgF2 interface. With a 5 nm-thick MgF2 layer, the GaAs nanowire array solar cell with a height of 0.4–1 μm yields a remarkable conversion efficiency ranging from 14% to 15.6%, significantly higher than conventional structures with a much larger height. Moreover, by inserting the MgF2 layer between the substrate and a part of the nanowire, in addition to between the substrate and polymer, the absorption of substrate right below the nanowire is further suppressed, leading to an optimal efficiency of 15.9%, 18%, and 5.4% for 1 μm-high GaAs, InP, and Si nanowire solar cells, respectively. This work provides a simple and universal way to achieve low-cost high-performance nanoscale solar cells. View Full-Text
Keywords: nanowire; solar cell; bottom reflectivity; conversion efficiency nanowire; solar cell; bottom reflectivity; conversion efficiency
Show Figures

Figure 1

MDPI and ACS Style

Yan, X.; Liu, H.; Sibirev, N.; Zhang, X.; Ren, X. Performance Enhancement of Ultra-Thin Nanowire Array Solar Cells by Bottom Reflectivity Engineering. Nanomaterials 2020, 10, 184. https://doi.org/10.3390/nano10020184

AMA Style

Yan X, Liu H, Sibirev N, Zhang X, Ren X. Performance Enhancement of Ultra-Thin Nanowire Array Solar Cells by Bottom Reflectivity Engineering. Nanomaterials. 2020; 10(2):184. https://doi.org/10.3390/nano10020184

Chicago/Turabian Style

Yan, Xin; Liu, Haoran; Sibirev, Nickolay; Zhang, Xia; Ren, Xiaomin. 2020. "Performance Enhancement of Ultra-Thin Nanowire Array Solar Cells by Bottom Reflectivity Engineering" Nanomaterials 10, no. 2: 184. https://doi.org/10.3390/nano10020184

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop