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    Home»Solar»Flexible cadmium telluride solar cell with 12.6% efficiency via lift-off method – pv magazine International
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    Flexible cadmium telluride solar cell with 12.6% efficiency via lift-off method – pv magazine International

    By January 20, 2023No Comments3 Mins Read
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    A US analysis group has developed a cadmium telluride (CdTe) photo voltaic cell by means of a lifting technique that reportedly ensures increased crystallinity of the cadmium sulfide movie. The machine has an influence conversion effectivity of 12.60%, an open-circuit voltage of 0.829 V, a short-circuit present density of 23.64 mA/cm2, and a fill issue of 64.30%.

    January 20, 2023 Emiliano Bellini

    Researchers on the College of Toledo in the USA have developed a versatile CdTe photo voltaic cell by means of a water-assisted lift-off method, together with plus cadmium chloride remedy for cadmium sulfide (CdS) cell movie.

    “These are mild and versatile photo voltaic cells that may be put in on any curved floor or electrical machine and, most significantly, they are perfect for area purposes,” stated researcher Sandip Singh. pv journal.

    Scientists describe the water-assisted lift-off technique as a low price manufacturing course of to supply benefits reminiscent of low stress on CdTe movies and ambient temperature operation. The strategy of lifting consists of various photolithography strategies for making a photoresist profile that ensures separation between the skinny movie coating on the specified and undesirable areas of a sample. This entails washing off the photoresist to go away the movie on the patterned space.

    They use it break up mica sheets as a mediator substrate for the photo voltaic cell and a CdS buffer layer with a thickness of 100 nm. In addition they utilized a cadmium chloride (CdCl2) steam remedy of cadmium sulfide (CdS) movie previous to CdTe deposition and a second CdCl2 remedy after CdTe deposition.

    “A 3.5 μm CdTe absorber layer was deposited by a closed area sublimation technique with a supply temperature of 580 C and a substrate temperature of 520 C in a 1% oxygen and 99% argon surroundings,” they defined.

    Lecturers dry up the peeled movie with a nitrogen jet and positioned a clear conduction oxide indium zinc oxide (IZO) layer as entrance contact.

    “On this course of, the mica sheet solely serves to develop CdS and CdTe movies, after which the delamination mica sheet isn’t a part of the photo voltaic cell,” they stated.

    They are saying the method ends in a better crystallinity of the movies. They discovered that the common grain dimension of the CdS movie with out added CdCl2 the remedy is much less than added CdCl2 remedy. Which means the CdS movie has a better coductivity.

    Examined beneath commonplace mild circumstances, the cell achieved a Energy conversion effectivity of 12.60%, an open circuit voltage of 0.829 Va short-circuit present density of 23.64 mA/cm2, and a fill issue of 64.30%. The group describes this effectivity worth as the very best reported amongst all renewable CdTe photo voltaic cells made by the lifting method.

    “Extra CdCl2 remedy of the CdS layer considerably improves the open circuit voltage and fill whereas the The event of the short-circuit present density can’t be uncared for, “stated the researchers. They describes the brand new cell know-how in “Water-Assisted Lifting Course of for Versatile CdTe Photo voltaic Cells,” which was not too long ago revealed in ACS Publications.

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