Enhancement of CdS/CdTe solar cells by the interbuilding of a nanostructured Te-rich layer

C. Hernández Vásquez; M. L. Albor Aguilera; M. A. González Trujillo; J. M. Flores Márquez; D. Jiménez Olarte; S. Gallardo Hernández; A. Cruz Orea

doi:10.1088/2053-1591/aa7d88

Enhancement of CdS/CdTe solar cells by the interbuilding of a nanostructured Te-rich layer

C. Hernández Vásquez, M. L. Albor Aguilera, M. A. González Trujillo, J. M. Flores Márquez, D. Jiménez Olarte, S. Gallardo Hernández, A. Cruz Orea

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14 Scopus citations

Abstract

In this work, a typical superstrate structure of a CdS/CdTe solar cell has been developed, incorporating a Te p+ region in the CdTe surface as a back contact. The Te region was grown as a nanostructured thin film material on the CdTe surface by employing the close space vapor transport (CSVT) technique. The incorporation of a nanostructured Te p+ region to the typical CdS/CdTe structure increased the efficiency from 4.5%-12%. A strong dependence on the electrical characteristics of the CdTe/metal junction on the morphological properties of the Te p+ region was observed, and an appreciable reduction in the Cu diffusion into the solar cell was measured by secondary ion mass spectrometry (SIMS). Thus, we demonstrate that a nanostructured Te p+ region is the best option to improve the performance of the back contact.

Original language	English
Article number	086403
Journal	Materials Research Express
Volume	4
Issue number	8
DOIs	https://doi.org/10.1088/2053-1591/aa7d88
State	Published - Aug 2017

Keywords

Back contacts
CdTe
Nanostructured Te region
Solar cells

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10.1088/2053-1591/aa7d88

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@article{f38e05c7098144d59afb4a35a89661bb,

title = "Enhancement of CdS/CdTe solar cells by the interbuilding of a nanostructured Te-rich layer",

abstract = "In this work, a typical superstrate structure of a CdS/CdTe solar cell has been developed, incorporating a Te p+ region in the CdTe surface as a back contact. The Te region was grown as a nanostructured thin film material on the CdTe surface by employing the close space vapor transport (CSVT) technique. The incorporation of a nanostructured Te p+ region to the typical CdS/CdTe structure increased the efficiency from 4.5%-12%. A strong dependence on the electrical characteristics of the CdTe/metal junction on the morphological properties of the Te p+ region was observed, and an appreciable reduction in the Cu diffusion into the solar cell was measured by secondary ion mass spectrometry (SIMS). Thus, we demonstrate that a nanostructured Te p+ region is the best option to improve the performance of the back contact.",

keywords = "Back contacts, CdTe, Nanostructured Te region, Solar cells",

author = "{Hern{\'a}ndez V{\'a}squez}, C. and {Albor Aguilera}, {M. L.} and {Gonz{\'a}lez Trujillo}, {M. A.} and {Flores M{\'a}rquez}, {J. M.} and {Jim{\'e}nez Olarte}, D. and {Gallardo Hern{\'a}ndez}, S. and {Cruz Orea}, A.",

note = "Publisher Copyright: {\textcopyright} 2017 IOP Publishing Ltd.",

year = "2017",

month = aug,

doi = "10.1088/2053-1591/aa7d88",

language = "Ingl{\'e}s",

volume = "4",

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T1 - Enhancement of CdS/CdTe solar cells by the interbuilding of a nanostructured Te-rich layer

AU - Hernández Vásquez, C.

AU - Albor Aguilera, M. L.

AU - González Trujillo, M. A.

AU - Flores Márquez, J. M.

AU - Jiménez Olarte, D.

AU - Gallardo Hernández, S.

AU - Cruz Orea, A.

PY - 2017/8

Y1 - 2017/8

N2 - In this work, a typical superstrate structure of a CdS/CdTe solar cell has been developed, incorporating a Te p+ region in the CdTe surface as a back contact. The Te region was grown as a nanostructured thin film material on the CdTe surface by employing the close space vapor transport (CSVT) technique. The incorporation of a nanostructured Te p+ region to the typical CdS/CdTe structure increased the efficiency from 4.5%-12%. A strong dependence on the electrical characteristics of the CdTe/metal junction on the morphological properties of the Te p+ region was observed, and an appreciable reduction in the Cu diffusion into the solar cell was measured by secondary ion mass spectrometry (SIMS). Thus, we demonstrate that a nanostructured Te p+ region is the best option to improve the performance of the back contact.

AB - In this work, a typical superstrate structure of a CdS/CdTe solar cell has been developed, incorporating a Te p+ region in the CdTe surface as a back contact. The Te region was grown as a nanostructured thin film material on the CdTe surface by employing the close space vapor transport (CSVT) technique. The incorporation of a nanostructured Te p+ region to the typical CdS/CdTe structure increased the efficiency from 4.5%-12%. A strong dependence on the electrical characteristics of the CdTe/metal junction on the morphological properties of the Te p+ region was observed, and an appreciable reduction in the Cu diffusion into the solar cell was measured by secondary ion mass spectrometry (SIMS). Thus, we demonstrate that a nanostructured Te p+ region is the best option to improve the performance of the back contact.

KW - Back contacts

KW - CdTe

KW - Nanostructured Te region

KW - Solar cells

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U2 - 10.1088/2053-1591/aa7d88

DO - 10.1088/2053-1591/aa7d88

M3 - Artículo

SN - 2053-1591

VL - 4

JO - Materials Research Express

JF - Materials Research Express

IS - 8

M1 - 086403

ER -

Enhancement of CdS/CdTe solar cells by the interbuilding of a nanostructured Te-rich layer

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Keywords

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