To further optimize the spatial resolution of the Raman fiber-optic sensing system under the premise of maintaining the SNR (or sensing distance), researchers have proposed several advanced solutions, 27–33 including the pulse-coded modulation scheme 27–29 and the special fiber sensing scheme. 30–32 The pulse-coded modulation scheme …
To maximize the opportunities of perovskite materials for photovoltaics applications, it would be desirable to have a full understanding of the detrimental effects …
Fig. 1 shows the absorption curves of SiN x thin films calculated from the measured k values by SE. Absorption in the U–V part of the spectrum increases as the n of SiN x increases, which is mainly due to the excessive Si atoms in the chemical structure of the SiN x thin films. thin films.
Fiber-optic acoustic sensors based on Fabry-Perot (F-P) interference structure have advantages of compact structure, high sensitivity, convenience to manufacture and immunity to electromagnetic interference. To simplify the demodulation system of the fiber-optic F-P sensor and reduce the demodulation cost, a low-frequency acoustic detector based on …
Perovskite CH3NH3PbI3 light absorber is deposited on the mesoporous TiO2 layer via one-step and two-step coating methods and their photovoltaic performances are For pore-filling with CH 3 NH 3 PbI 3 perovskite, sequential deposition technique via two-step dipping was found to one of effective ways to achieve reproducibly high efficiency …
With rapidly increasing power conversion efficiency (PCE) approaching silicon-based solar cells, OSCs present the merits of light weight, flexibility, semitransparency, and large-area printing, which promise the potential commercializing value and unique 1-4 5-7
Composition–Morphology Correlation in PTB7-Th/PC 71 BM Blend Films for Organic Solar Cells Lin Song Lehrstuhl für Funktionelle Materialien, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
For this characteristic, a higher signal‐to‐noise ratio (SNR) demodulation scheme, named compression correlation demodulation, is used to detect the temperature change along the optical fiber. The positive correlation peak generated by the proposed mechanism produces a multiplied amplification effect through compressing the whole intensity points …
Wide bandgap perovskite solar cells (PSCs) have attracted significant attention because they can be applied to the top cells of tandem solar cells. However, high open-circuit voltage (V OC) deficit (>0.4 V) result from poor crystallization and high non-radiative recombination losses become a serious limitation in the pursuit of high …
Crystalline silicon-based solar cell possesses the dominate market share in photovotalic industry, however, the correlation of micro-defects and cell performance still remains ambiguous.
Open-Circuit Voltage
For this characteristic, a higher signal-to-noise ratio (SNR) demodulation scheme, named compression correlation demodulation, is used to detect the temperature change along the optical fiber. The positive correlation peak generated by the proposed mechanism produces a multiplied amplification effect through compressing the whole intensity points …
Effect of Temperature
A high-sensitivity low-frequency fiber-optic Fabry-Perot (F-P) acoustic sensing scheme was proposed based on optical cross-correlation (OCC). The finite element method (FEM) is ...
on the correlation between solar cell cracks and hotspots Mahmoud Dhimish1* & Pavlos I. Lazaridis2 In recent years, solar cell cracks have been a topic of interest to industry because of their ...
For this characteristic, a higher signal-to-noise ratio (SNR) demodulation scheme, named compression correlation demodulation, is used to detect the temperature change along the optical fiber. The positive correlation peak generated by the proposed mechanism produces a multiplied amplification effect through compressing the whole …
The design and fabrication of better excitonic solar cells are the need of the hour for futuristic energy solutions. This designing needs a better understanding of the charge transport properties of excitonic solar cells. One of the popular methods of understanding the charge transport properties is the anal
Magnetic field - Electrical characteristic correlation for a silicon solar cell (Si-SC) of n+ pp + structure was studied in the dark and illumination modes. In the dark, both the current and the voltage decreased with increasing the magnetic field in forward bias. However, in reverse bias, the behavior was quite different. Under illumination, the effect of …
CELLO (solar CELl LOcal characterization) allows to measure quickly and reliably local photo current and photo voltage responses. In this paper we present a fully general model ...
This review brings a unique insight into structure–function correlation in this field, which may help to rapidly develop efficient OSCs. 1 INTRODUCTION. …
Small perturbation techniques have proven to be useful tools for the investigation of perovskite solar cells. A correct interpretation of the spectra given by impedance spectroscopy (IS), intensity-modulated photocurrent spectroscopy (IMPS), and intensity-modulated photovoltage spectroscopy (IMVS) is key for the understanding of device …
The method for predicting solar cell degradation in space radiation environments developed recently at the US Naval Research Laboratory (NRL) is …
The cross-correlation method and phase demodulation method are compared based on the theoretical and numerical analysis. The result shows that the spatial resolution (SR) of strain/temperature sensing is decided by the sweep range of the tunable laser source, while this parameter is much larger in traditional scheme.
What kind of FSK signal is this and what demodulation technique can I use to demodulate it. Why is the phase of the 1''s changing like that and how does that effect how it needs to be demodulated. I will be programming the demodulation in …
This article shows how power production data can be used to determine the solar cell parameters and degradation rates of a PV system. First, the single-diode …
A multichannel fiber-optic Fabry-Perot (F-P) demodulator based on nonscanning correlation demodulation is proposed. The demodulator principle is analyzed, and the prototype of nonscanning correlation demodulation fiber-optic F-P demodulator is made and tested. The measurement range of the prototype is from 10 to 40 ?m, the …
Correlation of Nanomorphology with Structural and Spectroscopic Studies in Organic Solar Cells Click to copy article link Article link copied! Urvashi Bothra Urvashi Bothra IITB-Monash Research Academy, IIT Bombay, ...
Understanding the relationships between molecular properties and device parameters is highly desired not only to improve the overall performance of an organic solar cell but also to fulfill the …
Simulation result indicates that this high performance digital demodulator can work well under the 6dB input signal-to-noise ratio (SNR) with +/- 22% frequency deviation tolerance. A high performance digital demodulator for RFID reader receiver is proposed. After carefully analyzing the characteristics of the received data, correlation …
Conventional eddy-current sensors have the advantages of being contactless and having high bandwidth and high sensitivity. They are widely used in micro-displacement measurement, micro-angle …
Copper indium sulfide, CuInS2 (CIS) semiconductors have currently attracted a great deal of attention as photosensitizers for solar cells. In this study, CIS/CdS/TiO2 solar cells were prepared by a simple, low-cost, and non-vacuum process. In particular, sandwich-type solar cells were fabricated using conductive carbon as hole …
Abstract Read online Raman distributed optical fiber temperature sensors possess the unique capability of measuring spatial environmental temperatures, which can be of great interest in several fields of application. The key physics barrier to spatial resolution for ...
Optical fiber measurement technology is widely used in the strength testing of buildings, the health testing of industrial equipment, and the minimally invasive surgery of modern medical treatment due to its characteristics of free calibration, high precision, and small size. This paper presents an algorithm that can improve the range and stability of …
2 · Organic solar cells (OSCs) enable low-cost electricity generation while being lightweight, semitransparent, easy to fabricate, highly flexible, and notably efficient [1], [2], …
The quality control in solar cell production relies on the acquisition of quantitative performance data (I–V-data) together with imaging diagnostics such as electroluminescence (EL) imaging. The classification of the solar cells into different quality groups based on the ...
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