Record breaking solar cells : ZnxCd(1-x)Te graded bandgap nanoarrays. | Zendy

Jose Luis CruzCampa | Zendy; David Zubía | Zendy; Xiaowang Zhou | Zendy; Donald K. Ward | Zendy; Carlos Anthony Sanchez | Zendy; Jose J. Chavez | Zendy; Brandon Adrian Aguirre | Zendy; Farhana Anwar | Zendy; Damian Marrufo | Zendy; Erik David Spoerke | Zendy; Chun-Kit Chan | Zendy; Ping Lu | Zendy; Michael J. Rye | Zendy; Heber Prieto | Zendy; J.C. McClure | Zendy; Alejandro A. Pimentel | Zendy; María Teresa Alonso Salazar | Zendy; Joseph R. Michael | Zendy; Edward Gonzales | Zendy; David Bruce Burckel | Zendy; Gregory N. Nielson | Zendy

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Record breaking solar cells : ZnxCd(1-x)Te graded bandgap nanoarrays.

Author(s) -

Jose Luis CruzCampa,

David Zubía,

Xiaowang Zhou,

Donald K. Ward,

Carlos Anthony Sanchez,

Jose J. Chavez,

Brandon Adrian Aguirre,

Farhana Anwar,

Damian Marrufo,

Erik David Spoerke,

Chun-Kit Chan,

Ping Lu,

Michael J. Rye,

Heber Prieto,

J.C. McClure,

Alejandro A. Pimentel,

María Teresa Alonso Salazar,

Joseph R. Michael,

Edward Gonzales,

David Bruce Burckel,

Gregory N. Nielson

Publication year - 2012

Language(s) - English

Resource type - Reports

DOI - 10.2172/1057256

Subject(s) - band gap , materials science , cadmium telluride photovoltaics , optoelectronics , solar cell , dislocation , impurity , alloy , crystal (programming language) , nanotechnology , composite material , chemistry , organic chemistry , computer science , programming language

CdTe is the leading material for thin-film solar cells due to ease of processing and reduced cost. However, low conversion efficiencies due to defects in the material are still a problem in these devices. We propose implementing micro and nano-enabled pseudomorphic growth of ZnCdTe to dramatically increase the efficiency of CdTe solar cells. Simulations predict that defect-free films are possible in graded ZnCdTe nanoislands below 90 nm as well as 24 % efficient solar cells with the use of ZnCdTe grading. Selective growth of CdTe showed single grains when the island sizes decreased below 300 nm. The simulation and experimental results demonstrate for the first time the ability to use nanopatterned substrates to enhance uniformity and efficiency in CdTe thin film solar cells. More than 20 reports, presentations, and papers were produced as part of this work and the results from this project enabled UTEP and Sandia to secure to grants.

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