Details
| Original language | English |
|---|---|
| Article number | 2400170 |
| Journal | Advanced materials interfaces |
| Volume | 11 |
| Issue number | 28 |
| Publication status | Published - 2 Oct 2024 |
Abstract
Fabrication and characterization of solar cells based on multicrystalline silicon (mc-Si) thin films are described and synthesized from low-cost soda-lime glass (SLG). The aluminothermic redox reaction of the silicon oxide in SLG during low-temperature annealing at 600 – 650 °C leads to an mc-Si thin film with large grains of lateral dimensions in the millimeter range, and moderate p-type conductivity with an average Al acceptor concentration between 5 × 10 16 and 1.2 × 10 17 cm −3 in the bulk. A residual composite layer of mainly alumina and unreacted Al forms beneath the mc-Si thin film as the second product of the crystalline silicon synthesis (CSS) process, which can be used as rear contact in a vertical solar cell design. The mc-Si absorber (≈10 µm) is thin enough that the diffusion length given by a minority carrier lifetime of ≈1 µs exceeds the path length to the top contact several times. Homojunction and heterojunction diodes have been fabricated on the mc-Si thin films and show great potential of CSS for the realization of high-performance solar cells.
Keywords
- aluminothermic reaction, heterojunction-emitter solar cell, multicrystalline silicon, soda-lime glass, thin film
ASJC Scopus subject areas
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Advanced materials interfaces, Vol. 11, No. 28, 2400170, 02.10.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Solar Cells on Multicrystalline Silicon Thin Films Converted from Low‐Cost Soda‐Lime Glass
AU - Schall, Ingrid
AU - Jia, Guobin
AU - Brückner, Uwe
AU - Gawlik, Annett
AU - Strelow, Christian
AU - Krügener, Jan
AU - Tan, Ditian
AU - Fahrbach, Michael
AU - Ebbinghaus, Stefan G.
AU - Plentz, Jonathan
AU - Peiner, Erwin
N1 - Publisher Copyright: © 2024 The Author(s). Advanced Materials Interfaces published by Wiley-VCH GmbH.
PY - 2024/10/2
Y1 - 2024/10/2
N2 - Fabrication and characterization of solar cells based on multicrystalline silicon (mc-Si) thin films are described and synthesized from low-cost soda-lime glass (SLG). The aluminothermic redox reaction of the silicon oxide in SLG during low-temperature annealing at 600 – 650 °C leads to an mc-Si thin film with large grains of lateral dimensions in the millimeter range, and moderate p-type conductivity with an average Al acceptor concentration between 5 × 10 16 and 1.2 × 10 17 cm −3 in the bulk. A residual composite layer of mainly alumina and unreacted Al forms beneath the mc-Si thin film as the second product of the crystalline silicon synthesis (CSS) process, which can be used as rear contact in a vertical solar cell design. The mc-Si absorber (≈10 µm) is thin enough that the diffusion length given by a minority carrier lifetime of ≈1 µs exceeds the path length to the top contact several times. Homojunction and heterojunction diodes have been fabricated on the mc-Si thin films and show great potential of CSS for the realization of high-performance solar cells.
AB - Fabrication and characterization of solar cells based on multicrystalline silicon (mc-Si) thin films are described and synthesized from low-cost soda-lime glass (SLG). The aluminothermic redox reaction of the silicon oxide in SLG during low-temperature annealing at 600 – 650 °C leads to an mc-Si thin film with large grains of lateral dimensions in the millimeter range, and moderate p-type conductivity with an average Al acceptor concentration between 5 × 10 16 and 1.2 × 10 17 cm −3 in the bulk. A residual composite layer of mainly alumina and unreacted Al forms beneath the mc-Si thin film as the second product of the crystalline silicon synthesis (CSS) process, which can be used as rear contact in a vertical solar cell design. The mc-Si absorber (≈10 µm) is thin enough that the diffusion length given by a minority carrier lifetime of ≈1 µs exceeds the path length to the top contact several times. Homojunction and heterojunction diodes have been fabricated on the mc-Si thin films and show great potential of CSS for the realization of high-performance solar cells.
KW - aluminothermic reaction
KW - heterojunction-emitter solar cell
KW - multicrystalline silicon
KW - soda-lime glass
KW - thin film
UR - http://www.scopus.com/inward/record.url?scp=85202875839&partnerID=8YFLogxK
U2 - 10.1002/admi.202400170
DO - 10.1002/admi.202400170
M3 - Article
VL - 11
JO - Advanced materials interfaces
JF - Advanced materials interfaces
SN - 2196-7350
IS - 28
M1 - 2400170
ER -