In:
Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 11, No. 27 ( 2023), p. 14748-14759
Abstract:
Harnessing energy from the surrounding light using indoor photovoltaics has gained momentum to address the carbon footprint resulting from used and dead batteries. Dye-sensitized solar cells (DSCs) have emerged as one of the most efficient and sustainable indoor light harvesting alternatives which can significantly reduce the environmental impact of batteries. Energy harvesting and managing circuits in these devices demand higher open circuit potentials ( V OC ). Nevertheless, recombination losses frequently lower the open-circuit potential in DSCs, especially when illuminated indoors. We present an innovative TiO 2 /ZnO bilayer architecture capable of delivering higher V OC by carefully controlling the conduction band (CB) position and recombination losses. By sensitizing this innovative bilayer electrode with MS5 dye and a [Cu(dmp) 2 ] 1+/2+ redox mediator, we achieved a record V OC of 1.27 V from a single junction device under Air Mass 1.5 Global (AM 1.5G), 100 mW cm −2 solar irradiation and 1.295 V under higher intensity LED light (200 mW cm −2 ). These bilayer devices also demonstrated impressive V OC of 1.025 V under 1000 lux compact fluorescent light (CFL) and light emitting diode (LED) illumination and could autonomously power a temperature sensor using a single device of 0.24 cm 2 active area. This work highlights the potential of modifying the semiconductor and device architecture to achieve higher V OC in DSCs, which is essential for integrating these photovoltaic devices with smart IoT devices making them autonomous and sustainable.
Type of Medium:
Online Resource
ISSN:
2050-7488
,
2050-7496
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
2702232-8
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