Hierarchical Transparent Back Contacts for Bifacial CdTe PV.
ACS Energy Lett
; 9(4): 1617-1623, 2024 Apr 12.
Article
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| MEDLINE
| ID: mdl-38633996
ABSTRACT
A hierarchical transparent back contact leveraging an AlGaOx passivating layer, Ti3C2Tx MXene with a high work function, and a transparent cracked film lithography (CFL) templated nanogrid is demonstrated on copper-free cadmium telluride (CdTe) devices. AlGaOx improves device open-circuit voltage but reduces the fill factor when using a CFL-templated metal contact. Including a Ti3C2Tx interlayer improves the fill factor, lowers detrimental Schottky barriers, and enables metallization with CFL by providing transverse conduction into the nanogrid. The bifacial performance of an AlGaOx/Ti3C2Tx/CFL gold contact is evaluated, reaching 19.5% frontside efficiency and 2.8% backside efficiency under 1-sun illumination for a copper-free, group-V doped CdTe device. Under dual illumination, device power generation reached 200 W/m2 with 0.1 sun backside illumination.
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MEDLINE
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En
Revista:
ACS Energy Lett
Año:
2024
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Article
País de afiliación:
Estados Unidos