Real-time photovoltaic parameters assessment of carbon quantum dots showing strong blue emission

Abstract

Carbon QD showing bright blue fluorescence aid in improving the photovoltaic parameters in a co-sensitized solar cell. Time-dependent I–V analysis revealed the real-time functioning of the device.

Harnessing infrared radiation using carbon dots: photovoltaic devices achieving extraordinary efficiency under faint lighting

“…The Bode plot (details in ESI, † device characterization) was derived from the EIS measurement to analyze the effective change in electron lifetime. 9 A gradual decline in the lifetime is clearly visible from Fig. 7b, wherein it decreases from 25.19 ms (T0) to 10.03 ms (T360).…”

“…Standard protocol was followed for fabricating the DSSCs. 9,27 In a typical process, after cleaning the fluorine-doped tin oxide (FTO) glasses, spin-coating of the buffer or blocking layer and platinum solution was performed at ∼1500 rpm for a minute. The FTO glasses were sintered at 450 °C for thirty minutes, followed by doctor blading the TiO 2 paste using two pairs of scotch tapes for thickness control.…”

“…Traditional inorganic quantum dots show fluorescent properties owing to their quantum confinement effect; however, in the case of CDs, the surface passivation phenomenon plays a dominant role. 6,9…”

“…Their excellent optical and electrochemical properties have paved the way for their application in various areas, such as biomedical imaging and sensing, chemical sensing, drug delivery, photocatalysis and photovoltaic devices. [3][4][5][6][7][8][9] The solubility of CDs in aqueous media presents an added advantage for their ease of application. Traditional inorganic quantum dots show fluorescent properties owing to their quantum confinement effect; however, in the case of CDs, the surface passivation phenomenon plays a dominant role.…”

Design and photovoltaic studies of W@TiO2/rGO nanocomposites with polymer gel electrolyte

“…The device was fabricated by sandwiching the PEO-PEG electrolyte (as reported in our previous research work) between the CE and WE. 15,59 Further, the sandwiched photovoltaic device was tested by measuring the photocurrent density-voltage (I-V) curve of the device using a Keithley 2400 source meter and solar simulator (PET, USA) with a 100 W xenon lamp as the light source equipped with a band pass filter, and the light intensity was set to 100 mW cm À2 (Si-photodiode standard was used to calibrate the light intensity). A 1 sun illumination was employed to determine the light-to-electricity conversion efficiency.…”