Solar energy paper index
Self-powered and highly stable broadband photodetectors based on spin-coated PbWO4/Si heterostructures with 720-day environmental robustness
One-line summary
A solar energy research paper on Self-powered and highly stable broadband photodetectors based on spin-coated PbWO4/Si heterostructures with 720-day environmental robustness.
Engineering notes
Engineering notes will be added by the Power for Solar editorial team.
Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
Abstract Lead Tungstate (PbWO 4 ) has been extensively utilized as a high-performance scintillator in high-energy physics due to its superior radiation hardness and fast response time. However, its potential for direct, high-performance photodetection has remained largely untapped. This work bridges this gap by demonstrating, for the first time, a high-sensitivity broadband photodetector based on a PbWO 4 /Si heterojunction including UV (365 nm), visible, and IR (850 nm) regions. Beyond its traditional role in radiation sensing, we show that PbWO 4 can be repurposed for versatile optoelectronic applications. Fabricated via a cost-effective spin-coating method, the device exhibits exceptional performance across the UV, visible, and IR regions. While the highest response (R) value was 137 mA/W under white light, measurements at different wavelengths showed that the R value reached 1416 mA/W under 356 nm UV light. Optimum detectivity values for white light (for 125 mW/cm 2 ) and 365 nm UV light were obtained as 7.85 × 10 10 and 9.21 × 10 11 Jones, respectively, at zero bias. The external quantum efficiency (EQE) value was obtained as 466(%) at 365 nm. The device exhibited a remarkable maturation in performance after 205 days of ambient storage, with the dark current decreasing by 48.81% and the responsivity enhancing by up to 303%, demonstrating exceptional long-term stability and environmental robustness. The I–V characteristics of the device recorded after 720 days showed no significant deviation from the results obtained at 205 days. These findings not only expand the application scope of PbWO 4 into the broadband optoelectronics domain but also provide a robust framework for developing stable, low-cost, and high-efficiency heterojunction detectors.
Links and sources
Need this topic turned into a technical roadmap?
Power for Solar can prepare a custom solar energy literature review, simulation code map, dataset map, and B2B photovoltaic technology assessment.
Request B2B research
Comments