---
_id: '645'
abstract:
- lang: eng
text: PbS (lead sulfide) colloidal quantum dots consist of crystallites
with diameters in the nanometer range with organic molecules on their surfaces,
partly with additional metal complexes as ligands. These surface molecules are
responsible for solubility and prevent aggregation, but the interface between
semiconductor quantum dots and ligands also influences the electronic structure.
PbS quantum dots are especially interesting for optoelectronic applications and
spectroscopic techniques, including photoluminescence, photodiodes and solar cells.
Here we concentrate on the latter, giving an overview of the optical properties
of solar cells prepared with PbS colloidal quantum dots, produced by different
methods and combined with diverse other materials, to reach high efficiencies
and fill factors.
article_number: '1743'
article_type: review
author:
- first_name: Tomasz
full_name: Blachowicz, Tomasz
last_name: Blachowicz
- first_name: Andrea
full_name: Ehrmann, Andrea
id: '223776'
last_name: Ehrmann
orcid: 0000-0003-0695-3905
citation:
alphadin: 'Blachowicz, Tomasz ; Ehrmann, Andrea: Recent Developments of
Solar Cells from PbS Colloidal Quantum Dots. In: Applied Sciences Bd. 10
(2020), Nr. 5'
ama: Blachowicz T, Ehrmann A. Recent Developments of Solar Cells from PbS Colloidal
Quantum Dots. Applied Sciences. 2020;10(5). doi:10.3390/app10051743
apa: Blachowicz, T., & Ehrmann, A. (2020). Recent Developments of Solar Cells
from PbS Colloidal Quantum Dots. Applied Sciences, 10(5). https://doi.org/10.3390/app10051743
bibtex: '@article{Blachowicz_Ehrmann_2020, title={Recent Developments of Solar Cells
from PbS Colloidal Quantum Dots}, volume={10}, DOI={10.3390/app10051743},
number={51743}, journal={Applied Sciences}, author={Blachowicz, Tomasz and Ehrmann,
Andrea}, year={2020} }'
chicago: Blachowicz, Tomasz, and Andrea Ehrmann. “Recent Developments of Solar Cells
from PbS Colloidal Quantum Dots.” Applied Sciences 10, no. 5 (2020). https://doi.org/10.3390/app10051743.
ieee: T. Blachowicz and A. Ehrmann, “Recent Developments of Solar Cells from PbS
Colloidal Quantum Dots,” Applied Sciences, vol. 10, no. 5, 2020.
mla: Blachowicz, Tomasz, and Andrea Ehrmann. “Recent Developments of Solar Cells
from PbS Colloidal Quantum Dots.” Applied Sciences, vol. 10, no. 5, 1743,
2020, doi:10.3390/app10051743.
short: T. Blachowicz, A. Ehrmann, Applied Sciences 10 (2020).
date_created: 2021-01-03T14:54:32Z
date_updated: 2021-05-25T08:37:30Z
ddc:
- '620'
department:
- _id: '103'
doi: 10.3390/app10051743
file:
- access_level: open_access
content_type: application/pdf
creator: aehrmann
date_created: 2021-01-03T14:54:02Z
date_updated: 2021-01-03T14:54:02Z
file_id: '646'
file_name: _2020_Blachowicz_ApplSci10_01743.pdf
file_size: 1122094
relation: main_file
success: 1
file_date_updated: 2021-01-03T14:54:02Z
funded_apc: '1'
has_accepted_license: '1'
intvolume: ' 10'
issue: '5'
keyword:
- colloidal PbS quantum dots
- quantum dot solar cells
- semiconductor
- heterojunction
- ligand
- open-circuit voltage
- short-circuit current
- power conversion efficiency
- fill factor
language:
- iso: eng
oa: '1'
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
quality_controlled: '1'
status: public
title: Recent Developments of Solar Cells from PbS Colloidal Quantum Dots
type: journal_article
user_id: '237837'
volume: 10
year: '2020'
...
---
_id: '637'
abstract:
- lang: eng
text: Especially for the potential use as sensors, but also in all other
applications in which an interaction with the environment occurs, nanofibrous
materials are advantageous due to their large specific surface area. An interesting
material for electrospinning is the semiconductor zinc oxide (ZnO) which is often
used in photoelectric or sensory applications. Nanofibers containing ZnO can be
produced, for example, by electrospinning polyvinylpyrrolidone/zinc nitrate from
a dimethylformamide/ethanol solution, followed by calcination to remove the organic
phase. Alternatively, the polymer/semiconductor blended nanofibers can be used
which are often less brittle, but on the other hand offer less contact between
ZnO and the environment. Finally, decorating a nanofiber mat with ZnO offers another
possibility to prepare nanofibers with ZnO surface. Possible applications of electrospun
ZnO nanofibers or nanofiber mats include gas sensing, microwave absorption, photocatalytic
degradation or enhancement of supercapacitor electrodes. This short review gives
an overview of the most recent electrospinning and after-treatment techniques
to create pure and blended ZnO nanofibers and presents the broad variety of possible
applications of this well-known semiconductor with some still surprising properties.
article_number: '155892501989968'
article_type: review
author:
- first_name: Tomasz
full_name: Blachowicz, Tomasz
last_name: Blachowicz
- first_name: Andrea
full_name: Ehrmann, Andrea
last_name: Ehrmann
date_created: 2021-01-03T14:44:06Z
date_updated: 2021-01-18T15:32:28Z
ddc:
- '620'
department:
- _id: '103'
doi: 10.1177/1558925019899682
file:
- access_level: open_access
content_type: application/pdf
creator: aehrmann
date_created: 2021-01-03T14:43:28Z
date_updated: 2021-01-03T14:43:28Z
file_id: '638'
file_name: _2020_Blachowicz_JEFF15_1558925019899682.pdf
file_size: 256248
relation: main_file
success: 1
file_date_updated: 2021-01-03T14:43:28Z
funded_apc: '1'
has_accepted_license: '1'
intvolume: ' 15'
keyword:
- Electrospinning
- ZnO
- nanofibers
- semiconductor
- supercapacitor
- nanorods
- nanosheets
language:
- iso: eng
oa: '1'
publication: Journal of Engineered Fibers and Fabrics
publication_identifier:
issn:
- 1558-9250
- 1558-9250
publication_status: published
quality_controlled: '1'
status: public
title: 'Recent developments in electrospun ZnO nanofibers: A short review'
type: journal_article
user_id: '223776'
volume: 15
year: '2020'
...
---
_id: '622'
abstract:
- lang: eng
text: Developing dye-sensitized solar cells (DSSCs) further is of utmost importance
in a time of increasing energy consumption and the necessity to change to renewable
energy sources. Opposite to silicon-based solar cells, DSSCs can be produced from
low-cost, non-toxic materials. In addition, they can be applied on flexible substrates,
enabling even utilization on textile architecture. On the other hand, reaching
efficiencies in a similar order of magnitude as with silicon-based solar cells
is only possible by highly pure and toxic materials. This is why optimization
of DSSCs with non-toxic and affordable materials is of high interest. Here we
report on the possibility to increase the TiO2 layer performance by adding a nonionic
surfactant, focusing on a non-toxic electrolyte and a natural dye. Our results
show that coating the semiconducting layer from a solvent including a surfactant
increases the efficiency of the DSSC. To enable comparison with results of other
groups which are often reported for very small active areas, we compare three
different areas between 0.25 cm² and 6.0 cm² and show that the efficiencies are
more than doubled for the smallest active area in comparison to the largest one.
This underlines the necessity to perform more research on large-area DSSCs, e.g.
by combining several smaller cells, aiming at possible applications on tents or
other large textile areas.
article_number: '163945'
article_type: original
author:
- first_name: Suphawit
full_name: Udomrungkhajornchai, Suphawit
last_name: Udomrungkhajornchai
- first_name: Irén Juhász
full_name: Junger, Irén Juhász
last_name: Junger
- first_name: Andrea
full_name: Ehrmann, Andrea
last_name: Ehrmann
date_created: 2021-01-03T13:25:34Z
date_updated: 2021-01-18T15:32:28Z
department:
- _id: '103'
doi: 10.1016/j.ijleo.2019.163945
intvolume: ' 203'
keyword:
- Dye-sensitized solar cells (DSSCs)
- Semiconductor
- TiO2
- Nonionic surfactant
- Triton X-100
- Natural dye
- Anthocyanin
- Active area
language:
- iso: eng
publication: Optik
publication_identifier:
issn:
- 0030-4026
publication_status: published
quality_controlled: '1'
status: public
title: Optimization of the TiO2 layer in DSSCs by a nonionic surfactant
type: journal_article
user_id: '223776'
volume: 203
year: '2019'
...