Colloidal CIGS and CZTS nanocrystals:A precursor route to printed photovoltaics

Vahid A. Akhavan, Brian W. Goodfellow, Matthew G. Panthani, Chet Steinhagen, Taylor B. Harvey, C. Jackson Stolle, Brian A. Korgel

Journal of Solid State Chemistry 189 (2012) 2–12

Sameh HamzawyMESC9

Outline

Introduction

Spray Deposition Technique

Nanocrystalline Ink Synthesis

Conclusion

Introduction

•

Spray deposition by usingan Airbrush.

Spray deposition by using Robotic Sprayer .

Spray Deposition Technique

• Precise control over film thickness

• Using of flexible, inexpensive and light-weight

plastic substrates.

• Can be readily applied to larger substrates.

• Very effective and efficient nanocrystal deposition

approach.

Why Spray Deposition Technique ?

• The synthesis reaction equation of CIGS :

• ƞ ≈ 3.1 % on glass

substrates (2012) • ƞ ≈ 2 % on plastic

substrates • ƞ > 12 % has been

achieved by converting Cu(In,Ga)Se2 NC to Cu(In,Ga)(S,Se)2 via selenization at 500 C.

Nanocrystal Ink Synthesis

Guo Q, Ford GM, Agrawal R, Hillhouse HW, Prog Photovolt Res Appl 2012

Relatively low efficient PVs for commercialization.

High temperature selenization lead to higher efficiency.

Thin films deposition of inorganic materials under

ambient conditions.

Plastic PVs can be fabricated.

Conclusion

Thank you for your attention