High absorption perovskite solar cell with optical coupling structure

Tao, Haijun; Zhang, Wenjun; Zhang, Chuanxiang; Han, Lin-Xuan; Wang, Jiayue; Tan, Bing; Li, Yongtao; Kan, Caixia

doi:10.1016/j.optcom.2019.02.001

Cited by 20 publications

(7 citation statements)

References 24 publications

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“…To increase the LHE of solar energy systems, antireflective surfaces [10,[13][14][15], light-scattering layers [16][17][18], and plasmonic photonic crystals [19][20][21] have been developed and applied. Biomimetic soft lithography is a promising alternative for increasing the PCE of PSCs; it involves simply coating or attaching a material to the external surface of a transparent substrate.…”

Section: Introductionmentioning

confidence: 99%

Moth-eye Structured Polydimethylsiloxane Films for High-Efficiency Perovskite Solar Cells

et al. 2019

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HIGHLIGHTS • Moth-eye structured polydimethylsiloxane (PDMS) films with different sizes were fabricated to improve the efficiency of perovskite solar cells. • The PDMS with 300-nm moth-eye films significantly reduced light reflection at the front of the glass and therefore enhanced the solar cell efficiency of ~ 21%. • The PDMS with 1000-nm moth-eye films exhibited beautiful coloration. ABSTRACT Large-area polydimethylsiloxane (PDMS) films with variably sized moth-eye structures were fabricated to improve the efficiency of perovskite solar cells. An approach that incorporated photolithography, bilayer PDMS deposition and replication was used in the fabrication process. By simply attaching the moth-eye PDMS films to the transparent substrates of perovskite solar cells, the optical properties of the devices could be tuned by changing the size of the moth-eye structures. The device with 300-nm moth-eye PDMS films greatly enhanced power conversion efficiency of ~ 21% due to the antireflective effect of the moth-eye structure. Furthermore, beautiful coloration was observed on the 1000-nm moth-eye PDMS films through optical interference caused by the diffraction grating effect. Our results imply that moth-eye PDMS films can greatly enhance the efficiency of perovskite solar cells and building-integrated photovoltaics.

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Section: Introductionmentioning

confidence: 99%

Moth-eye Structured Polydimethylsiloxane Films for High-Efficiency Perovskite Solar Cells

et al. 2019

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“…For the large-area devices (1 cm 2 ), it can be seen from Figure 6d and Table 1 that the improvement of PCE for CsPbIBr 2 PSCs with moth-eye anti-reflector resulted from the enhanced J SC by 15.09%, which is in line with above discussions. In addition, we also performed the optical simulations based on finite-difference time-domain (FDTD) [39,[57][58][59] to explore the more efficient moth-eye nanostructures. It is found that by adjusting the ratios of depth to width, line widths, and periods, this structure is promising to achieve better anti-reflectivity at wider wavelength range (seeing supporting information), and thus may be used in future single and multi-junction solar cells.…”

Section: Resultsmentioning

confidence: 99%

Performance Enhancement of All-Inorganic Carbon-Based CsPbIBr2 Perovskite Solar Cells Using a Moth-Eye Anti-Reflector

et al. 2021

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All-inorganic carbon-based CsPbIBr2 perovskite solar cells (PSCs) have attracted increasing interest due to the low cost and the balance between bandgap and stability. However, the relatively narrow light absorption range (300 to 600 nm) limited the further improvement of short-circuit current density (JSC) and power conversion efficiency (PCE) of PSCs. Considering the inevitable reflectance loss (~10%) at air/glass interface, we prepared the moth-eye anti-reflector by ultraviolet nanoimprint technology and achieved an average reflectance as low as 5.15%. By attaching the anti-reflector on the glass side of PSCs, the JSC was promoted by 9.4% from 10.89 mA/cm2 to 11.91 mA/cm2, which is the highest among PSCs with a structure of glass/FTO/c-TiO2/CsPbIBr2/Carbon, and the PCE was enhanced by 9.9% from 9.17% to 10.08%. The results demonstrated that the larger JSC induced by the optical reflectance modulation of moth-eye anti-reflector was responsible for the improved PCE. Simultaneously, this moth-eye anti-reflector can withstand a high temperature up to 200 °C, and perform efficiently at a wide range of incident angles from 40° to 90° and under various light intensities. This work is helpful to further improve the performance of CsPbIBr2 PSCs by optical modulation and boost the possible application of wide-range-wavelength anti-reflector in single and multi-junction solar cells.

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“…Meanwhile, the void's radius (r) and lattice constant (a) for the anti-reflection layer optimization varies within An optical model is used to investigate the absorption in PSC devices. FDTD simulation provided by Lumerical Ltd used Maxwell equations to accurately solve the Maxwell equation related to the interaction between electromagnetic waves (light) and solar cells structure [32,33]. The incident light bandwidth used in this study is 300-1000 nm based on the AM1.5 spectrum.…”

Section: Methodsmentioning

confidence: 99%

Light absorption enhancement of perovskite solar cells by a modified anti-reflection layer with corrugated void-like nanostructure using finite difference time domain methods

et al. 2023

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Perovskite solar cells (PSC) have become a growing research interest due to their flexibility, attractive properties, and low production cost. However, the thin-film structure of PSC often results in a not fully absorbed incident light by the active layer, which is crucial to determine PSC efficiency. Thus, the fabrication of an active layer with unique nanostructures is often used to enhance light absorption and general PSC efficiency. Using the theoretical simulation based-on Finite-Difference Time-Domain (FDTD) technique, this work demonstrates the successful improvement of light absorption by embedding corrugated void-like structure and perovskite thickness modification. The investigation of a corrugated void-type anti-reflection layer effect on light absorption is done by modifying the radius (r) and lattice constant (a) to obtain the optimum geometry. In addition, the MAPbI3 perovskite layer thickness is also adjusted to examine the optimum light absorption within the visible length to near-infrared. The theoretical calculations show that the optimum r = 692 nm and a = 776 nm. Meanwhile, the optimum absorber layer thickness is 750 nm. Compared to flat PSC, our proposed PSC absorbed more light, especially in the near-infrared region. Our result shows demonstrates the successful enhancement of light absorption by embedding corrugated void-like structure and modifying the perovskite thickness using a theoretical simulation based on the FDTD technique.

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High absorption perovskite solar cell with optical coupling structure

Cited by 20 publications

References 24 publications

Moth-eye Structured Polydimethylsiloxane Films for High-Efficiency Perovskite Solar Cells

Moth-eye Structured Polydimethylsiloxane Films for High-Efficiency Perovskite Solar Cells

Performance Enhancement of All-Inorganic Carbon-Based CsPbIBr2 Perovskite Solar Cells Using a Moth-Eye Anti-Reflector

Light absorption enhancement of perovskite solar cells by a modified anti-reflection layer with corrugated void-like nanostructure using finite difference time domain methods

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