Details
| Original language | English |
|---|---|
| Pages (from-to) | 1197-1202 |
| Number of pages | 6 |
| Journal | Solar Energy Materials and Solar Cells |
| Volume | 95 |
| Issue number | 4 |
| Early online date | 4 Feb 2011 |
| Publication status | Published - Apr 2011 |
Abstract
We derive and apply a model that determines the effective minority carrier lifetime of macroporous crystalline silicon samples as a function of bulk lifetime, surface passivation and pore morphology. Two cases are considered: A layer of periodic macropores at the surface of a silicon wafer and a free standing macroporous silicon layer. We compare the model with experimental lifetime measurements for samples with randomly positioned macropores with a length of 1040 μm. The pores have an average pore diameter of 2.4 μm and an average pore distance of 5.2 μm. The surface is passivated by thermal oxidation. The model agrees with the measurements if we assume an average surface recombination velocity S=24 cm/s at the pore surface.
Keywords
- Carrier lifetime, Carrier transport, Macroporous Si, Modeling, Porous Si
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
- Surfaces, Coatings and Films
Sustainable Development Goals
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In: Solar Energy Materials and Solar Cells, Vol. 95, No. 4, 04.2011, p. 1197-1202.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Modeling effective carrier lifetimes of passivated macroporous silicon layers
AU - Ernst, Marco
AU - Brendel, Rolf
N1 - Funding Information: This work is supported by the Federal Ministry for Environment, Nature Conservation and Nuclear Safety under the contract FKZ 0325147 .
PY - 2011/4
Y1 - 2011/4
N2 - We derive and apply a model that determines the effective minority carrier lifetime of macroporous crystalline silicon samples as a function of bulk lifetime, surface passivation and pore morphology. Two cases are considered: A layer of periodic macropores at the surface of a silicon wafer and a free standing macroporous silicon layer. We compare the model with experimental lifetime measurements for samples with randomly positioned macropores with a length of 1040 μm. The pores have an average pore diameter of 2.4 μm and an average pore distance of 5.2 μm. The surface is passivated by thermal oxidation. The model agrees with the measurements if we assume an average surface recombination velocity S=24 cm/s at the pore surface.
AB - We derive and apply a model that determines the effective minority carrier lifetime of macroporous crystalline silicon samples as a function of bulk lifetime, surface passivation and pore morphology. Two cases are considered: A layer of periodic macropores at the surface of a silicon wafer and a free standing macroporous silicon layer. We compare the model with experimental lifetime measurements for samples with randomly positioned macropores with a length of 1040 μm. The pores have an average pore diameter of 2.4 μm and an average pore distance of 5.2 μm. The surface is passivated by thermal oxidation. The model agrees with the measurements if we assume an average surface recombination velocity S=24 cm/s at the pore surface.
KW - Carrier lifetime
KW - Carrier transport
KW - Macroporous Si
KW - Modeling
KW - Porous Si
UR - http://www.scopus.com/inward/record.url?scp=79951851024&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2011.01.017
DO - 10.1016/j.solmat.2011.01.017
M3 - Article
AN - SCOPUS:79951851024
VL - 95
SP - 1197
EP - 1202
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
SN - 0927-0248
IS - 4
ER -