Dynamic Impurity Redistributions in Kesterite Absorbers

Grini, S. (författare): Universitetet i Oslo,University of Oslo,Univ Oslo, Dept Phys, Ctr Mat Sci & Nanotechnol, POB 1048, N-0316 Oslo, Norway.

Aboulfadl, Hisham, 1986 (författare): Chalmers tekniska högskola,Chalmers University of Technology,Chalmers Univ Technol, Dept Phys, S-41296 Gothenburg, Sweden.

Ross, Nils (författare): Uppsala universitet,Solcellsteknik,Univ Oslo, Dept Phys, Ctr Mat Sci & Nanotechnol, POB 1048, N-0316 Oslo, Norway.

Persson, Clas (författare): KTH,Tillämpad materialfysik,Universitetet i Oslo,University of Oslo,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH),Univ Oslo, Dept Phys, Ctr Mat Sci & Nanotechnol, POB 1048, N-0316 Oslo, Norway.;KTH Royal Inst Technol, Dept Mat Sci & Engn, S-10044 Stockholm, Sweden.

Platzer Björkman, Charlotte, 1976- (författare): Uppsala universitet,Solcellsteknik

Thuvander, Mattias, 1968 (författare): Chalmers tekniska högskola,Chalmers University of Technology,Chalmers Univ Technol, Dept Phys, S-41296 Gothenburg, Sweden.

Vines, L. (författare): Universitetet i Oslo,University of Oslo,Univ Oslo, Dept Phys, Ctr Mat Sci & Nanotechnol, POB 1048, N-0316 Oslo, Norway.

Universitetet i Oslo Univ Oslo, Dept Phys, Ctr Mat Sci & Nanotechnol, POB 1048, N-0316 Oslo, Norway (creator_code:org_t)

2020-04-06
2020
Engelska.
Ingår i: Physica status solidi. B, Basic research. - : Wiley. - 0370-1972 .- 1521-3951.

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Abstract Ämnesord

Stäng

Cu2ZnSn(S,Se)4 is a promising nontoxic earth-abundant solar cell absorber. To optimize the thin films for solar cell device performance, postdeposition treatments at temperatures below the crystallization temperature are normally performed, which alter the surface and bulk properties. The polycrystalline thin films contain relatively high concentrations of impurities, such as sodium, oxygen and hydrogen. During the treatments, these impurities migrate and likely agglomerate at lattice defects or interfaces. Herein, impurity redistribution after air annealing for temperatures up to 200 °C and short heavy water treatments are studied. In addition, nonuniformities of the sodium distribution on a nanometer and micrometer scale are characterized by atom probe tomography and secondary ion mass spectrometry, respectively. Sodium and oxygen correlate to a greater extent after heat treatments, supporting strong binding between the two impurities. Redistributions of these impurities occur even at room temperature over longer time periods. Heavy water treatments confirm out-diffusion of sodium with more incorporation of oxygen and hydrogen. It is observed that the increased hydrogen content does not originate from the heavy water. The existence of an “ice-like” layer on top of the Cu2ZnSnS4 layer is proposed.

TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Av författaren/redakt...: Grini, S.; Aboulfadl, Hisha ...; Ross, Nils; Persson, Clas; Platzer Björkman ...; Thuvander, Matti ...; visa fler...; Vines, L.; visa färre...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Annan materialte ...

Av lärosätet: Kungliga Tekniska Högskolan; Chalmers tekniska högskola; Uppsala universitet

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