HIT Solar Cell Modeling Using Graphene as a Transparent Conductive Layer Considering the Atacama Desert Solar Spectrum Revollo, Henrry Ferrada, Pablo Martín, Pablo Marzo Rosa, Aitor Del Campo, Valeria HIT solar cell Atacama Desert Solar spectral irradiance Graphene AFORS-HET This research was founded by ANID/FONDECYT/11190289 project, as well as ANID/FONDAP/1522A0006 “Solar Energy Research Center, SERC-Chile”; ANID–Fondecyt 1210490; ANID–ECOS210038–C21E08 and ANID—Millennium Science Initiative Program—NNBP # NCN2021_021. In addition, we recognize the support of the Graduate School at the Universi- dad de Antofagasta. A. Marzo would like to thank the Ramon y Cajal contract (RYC2021-031958-I), funded by the Spanish Ministerio de Ciencia e Innovación MCIN/AEI/10.13039/501100011033 and by the European Union “NextGenerationEU/PRTR”. We recognize the support of Helmholtz-Zentrum Berlin for providing the AFORS-HET simulation software. The optical and geometrical properties of transparent conductive oxide (TCO) are crucial factors influencing the efficiency of a Si : H/c Si heterojunction (HIT) solar cells. Graphene is a potential candidate to be used as TCO due to its optical and electrical properties. Here, the effect of graphene as TCO is numerically analyzed by varying the number of graphene layers from one to ten. First, the optical properties are calculated based on the transmittance data, and then the HJT cell's performance is simulated under the AM1.5 standard spectrum and the mean Atacama Desert solar spectral irradiance in Chile. In the modeling, the most relevant properties are calculated with the spectrum of the Atacama Desert. The most relevant values were obtained as follows: open circuit voltage V-oc = 721.4 mV, short circuit current J(sc) = 39.6 mA/cm(2), fill factor FF = 76.5%, and energy conversion efficiency E-ff = 21.6%. The maximum power of solar panels irradiated with the Atacama Desert spectrum exceeds the results obtained with the AM1.5 standard spectrum by 10%. When graphene is the transparent conducting oxide, quantum efficiency has a higher value in the ultraviolet range, which shows that it may be convenient to use graphene-based solar cells in places where ultraviolet intensity is high. 2023-10-23T10:41:45Z 2023-10-23T10:41:45Z 2023-08-17 journal article Revollo, H.; Ferrada, P.; Martin, P.; Marzo, A.; del Campo, V. HIT Solar Cell Modeling Using Graphene as a Transparent Conductive Layer Considering the Atacama Desert Solar Spectrum. Appl. Sci. 2023, 13, 9323. [https://doi.org/10.3390/app13169323] https://hdl.handle.net/10481/85181 10.3390/app13169323 eng info:eu-repo/grantAgreement/EC/NextGenerationEU/RYC2021-031958-I http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional MDPI