Determination of minority carrier diffusion length of sprayed-Cu2ZnSnS4 thin films

Maykel Courel, E. Valencia-Resendiz, F. A. Pulgarín-Agudelo, O. Vigil-Galán

Research output: Contribution to journalLetterpeer-review

28 Scopus citations

Abstract

Despite Cu2ZnSnS4(CZTS) is a potential candidate for solar cell applications, so far, low efficiency values have been reported. In particular, for spray-deposited CZTS, efficiencies lower than 2% are commonly achieved. It is well known that one of the most important parameters governing solar cell performance is minority carrier diffusion length (Ln). In this work, CZTS thin film solar cells with different compositional ratios are fabricated in order to study its impact on Ln values. The Ln parameter is calculated for sprayed-CZTS layers using external quantum efficiency measurements in conjunction with optical absorption coefficient versus wavelength measurements - for the first time. Values in the range of 0.11-0.17 μm are obtained emphasizing the need for improving sprayed-CZTS crystalline quality.

Original languageEnglish
Pages (from-to)1-3
Number of pages3
JournalSolid-State Electronics
Volume118
DOIs
StatePublished - 1 Apr 2016

Keywords

  • CZTS thin films
  • CZTS/CdS solar cells
  • Minority carrier diffusion length
  • Spray pyrolysis

Fingerprint

Dive into the research topics of 'Determination of minority carrier diffusion length of sprayed-Cu2ZnSnS4 thin films'. Together they form a unique fingerprint.

Cite this