Author
Susmitha Kalvapalli
Bio: Susmitha Kalvapalli is an academic researcher from Yogi Vemana University. The author has contributed to research in topics: Energy conversion efficiency & Dye-sensitized solar cell. The author has an hindex of 1, co-authored 2 publications receiving 5 citations.
Papers
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TL;DR: In this article, the light scattering performance is achieved by use of CeO2:Er3+/Yb3+ layer over TiO2 film, which is further treated with LiI contained acetonitrile solution.
16 citations
TL;DR: In this article, a new phenazine core-based hole transporting materials (HTMs) were synthesized and tested for improved power conversion efficiency via enhanced short-circuit density (Jsc) of 25.80 mA/cm2.
4 citations
TL;DR: In this paper , a dual function photo-electrode and its co-sensitization was used to achieve 8.41% of power conversion efficiency (PCE) with Jsc of 18.48 mA/cm2, Voc of 0.64 V and Fill Factor is 0.71.
2 citations
TL;DR: In this paper , dual function NaYF4 : Yb3+/Er3+ as photon upconverter (UC) and light scatterer (LS) for dye sensitized solar cells (DSSCs), as well perovskite solar cells(PSCs).
Abstract: Enhanced power conversion efficiency (PCE) is witnessed by inclusion of dual function NaYF4 : Yb3+/Er3+ as photon upconverter (UC) and light scatterer (LS) for dye sensitized solar cells (DSSCs), as well perovskite solar cells (PSCs). Emission studies by excitation with 980 nm laser light and diffuse reflectance measurements confirm that the synthesized NaYF4 : Yb3+/Er3+ exhibits dual function as upconverter and light scatterer. Three emission bands, in the spectral range of 650–710 nm, 510–570 nm, and 400–420 nm, are witnessed in emission studies. Multi-dye (N719, N749 and SPSQ2 dyes) sensitization is introduced during photoelectrode preparation. The absorption spectra match the observed emission bands well. The combined upconversion, light scattering and multi-dye sensitized DSSC reveals a high PCE of 11.16 %. The achieved results encouraged the fabrication of a PSC and its mini solar cell module by use of cost-effective carbon as electrode and all-inorganic CsPbI2Br perovskite. The results reveal PCEs of 16.55 % and 11.82 %, respectively.
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TL;DR: An overview of the progress in the research on the UC-enhanced solar cells is provided, which highlights the most prominent results obtained, gives some future perspectives and outlines the remaining challenges in this scientifically intriguing and application-wise important field.
32 citations
TL;DR: In this paper, a uniform semiconductor BiOCl shell was crafted onto NaYF4:Yb3+,Er3+ upconverters surface by a hydrothermal method.
15 citations
TL;DR: In this paper, the authors highlight recent advances in developing high-efficiency upconversion nanoparticles for photovoltaic application, focusing on fundamental energy transfer mechanisms, the survey of strategies for nanoparticle synthesis and surface modification, and various schemes of nanoparticle integration into photivoltaic devices.
Abstract: Development of photon conversion nanomaterials could principally leverage unutilized portions of the solar spectrum to address the increasing demand for renewable energy. However, improving photovoltaic performance using lanthanide-doped, spectral-converting nanomaterials remains a challenge. For photon upconversion, the most significant issues lie in their low quantum efficiencies and the need for high-power laser excitation. Despite these constraints, lanthanide-doped upconversion nanomaterials hold great promise to enhance the light-harvesting capacity and the conversion efficiency of existing solar cell modules. In this review, we highlight recent advances in developing high-efficiency upconversion nanoparticles for photovoltaic application. Special attention will be paid to fundamental energy transfer mechanisms, the survey of strategies for nanoparticle synthesis and surface modification, and various schemes of nanoparticle integration into photovoltaic devices. We also discuss future research directions and practical challenges in coupling upconversion nanomaterials with existing photovoltaic technologies.
13 citations
01 Jan 2022-Journal of Materials Chemistry C. Materials for Optical, Magnetic and Electronic Devices
TL;DR: In this article , the overview about phenazine derivatives is few reported in optoelectronic area, however, the overview is limited in the light-emitting diode (LED) field.
Abstract: Phenazine derivatives have made significant achievement owing to favorable photophysical and chemical properties in recent years. Nevertheless, the overview about phenazine derivatives is few reported in optoelectronic area. Herein, we...
6 citations
TL;DR: In this paper , the authors investigated the nonlinear optical properties of three polycyclic aromatic hydrocarbons (PAHs) based benzo[e]pyrene derivatives namely 10-phenylbenzos[e]-pyrene (BP1), 13-fluoro-10-(4-fluorophenyl)benzo [e] pyrene(BP2), and 13-methoxy- 10-(4 methoxyphenyl)bbenzo-e]polyphenyl (BP3) derivatives, using experimental techniques such as Z-scan technique, and theoretical time-dependent density functional theory (TDDFT).
3 citations