properties.<\/span><\/p>\nDespite the various PV devices that have been recounted so far, reversible, and fast wavelength-dependent responses have not been previously observed. To distinguish between irradiation colours utilising a single photodiode, a liquid crystal filter must be employed that can electronically switch the absorption colour range. However, these filters are bulky, and being able to perform colour detection without requiring such filters would be useful for minimising the size of photovoltaic devices.<\/p>\n
Photovoltaic devices made from antimony sulphide composite<\/h3>\n
Now, a research team from OU has built new photovoltaic devices created from antimony sulphide composite and discovered a unique effect. The voltage generated has the potential to be altered by switching the light colour, in which ultraviolet reduced the output voltage.<\/p>\n
Thus, a reversible change in the current versus voltage curves could be obtained simply by shining different colours of light on the antimony sulphide device. \u201cSuch a dramatic shift in voltage is not observed in silicon, perovskites, or organic solar cells,\u201d explained Ryosuke Nishikubo, first author.<\/p>\n
To understand the mechanism behind this effect, scientists performed transient photovoltage (TPV) and photo-induced charge extraction by linearly increasing voltage. These experiments clarified the dramatic and reversible change in charge carrier lifetime, which was induced by ultraviolet irradiation.<\/p>\n
Scientists concluded that WDPE was caused by metastable \u2018trap\u2019 states at the heterojunction interface, generated by high energy charges. These interfacial energy traps considerably diminished output voltage, and as a result, the light of certain energies could be distinguished based on the voltage.<\/p>\n
This change could be enhanced by the presence of the vapour from a polar solvent. \u201cWhile our work helps advance basic science by explaining this novel effect, the research also has many potential applications, including as a vapour detector,\u201d concluded Akinori Saeki, senior author.<\/p>\n
Applications of these novel devices<\/h3>\n
This antimony sulphide device phenomenon has the potential to be applied to light-sensing, and utilised in everything from mobile phones to cars, to security or horticultural systems. It can also be a part of imaging applications in medical and other scientific pursuits, such as space satellites and microphotography. Additionally, it is potentially suitable as a renewable energy source, because of its low toxicity and low production cost.<\/p>\n","protected":false},"excerpt":{"rendered":"
A research team from Osaka University has revealed a feature that exists in antimony sulphide devices, which has the potential to create more robust renewable energy generated by solar cells. The Osaka University (OU) research team has discovered a novel effect, where in which the voltage generated by photovoltaic devices can change based on the […]<\/p>\n","protected":false},"author":21,"featured_media":22868,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[24204],"tags":[763,24161,24134,628],"acf":[],"yoast_head":"\n
Antimony sulphide devices: Enhancing renewable energy<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\t\n\n\n\n\n\n\t\n\t\n\t\n