Investigating the Role of Grain Boundaries in CZTS and CZTSSe Thin Film Solar Cells with Scanning Probe Microscopy.
Summary of "Investigating the Role of Grain Boundaries in CZTS and CZTSSe Thin Film Solar Cells with Scanning Probe Microscopy."
Scanning Kelvin probe microscopy (SKPM) measurements reveal a higher positive surface potential at the grain boundaries (GBs) as compared to the grain while conductive atomic force microscopy (C-AFM) measurements show higher current flow in the vicinity of the GBs of Cu(2) ZnSnS(4) (CZTS) and Cu(2) ZnSn(S,Se)(4) (CZTSSe). These results demonstrate the enhanced minority carrier collection taking place at the GBs of CZTS and CZTSSe.
Affiliation
Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA.
Journal Details
This article was published in the following journal.
Name: Advanced materials (Deerfield Beach, Fla.)
ISSN: 1521-4095
Pages: 720-3
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22228331
- DOI: http://dx.doi.org/10.1002/adma.201103470
Medical and Biotech [MESH] Definitions
Pleura
The thin serous membrane enveloping the lungs (LUNG) and lining the THORACIC CAVITY. Pleura consist of two layers, the inner visceral pleura lying next to the pulmonary parenchyma and the outer parietal pleura. Between the two layers is the PLEURAL CAVITY which contains a thin film of liquid.
Film Dosimetry
Use of a device (film badge) for measuring exposure of individuals to radiation. It is usually made of metal, plastic, or paper and loaded with one or more pieces of x-ray film.
X-ray Film
A film base coated with an emulsion designed for use with x-rays.
Secale Cereale
A hardy grain crop, rye, grown in northern climates. It is the most frequent host to ergot (CLAVICEPS), the toxic fungus. Its hybrid with TRITICUM is TRITICALE, another grain.
Dental Pellicle
A thin protein film on the surface of DENTAL ENAMEL. It is widely believed to result from the selective adsorption of precursor proteins present in SALIVA onto tooth surfaces, and to reduce microbial adherence to the TEETH.
PubMed Articles
Cu2ZnSnS4 (CZTS) is a very promising semiconductor material when used for the absorber layer of thin film solar cells because it consists of only abundant and inexpensive elements. In addition, a low-...
Nanocrystals of multicomponent chalcogenides, such as Cu(2)ZnSnS(4) (CZTS), are potential building blocks for low-cost thin-film photovoltaics (PVs). CZTS PV devices with modest efficiencies have been...
A new solution-based method to fabricate Cu(2)ZnSn(S,Se)(4) (CZTSSe) thin films is presented. Binary and ternary chalcogenide nanoparticles were synthesized and used as precursors to form CZTSSe thin...
Nanoscale investigation of charge transport at the grain boundaries and wrinkles in graphene film.
The influence of grain boundaries and mechanical deformations in graphene film on the electric charge transport is investigated at nanoscale with conductive atomic force microcopy. Large area monolaye...
Porous copper zinc tin sulfide (CZTS) thin film was prepared via a solvothermal approach. Compared with conventional dye-sensitized solar cells (DSSCs), double junction photoelectrochemical cells usin...
Clinical Trials
Multiple Grain in Type 2 Diabetes
We aim to investigate the beneficial effect of adding grain fiber to daily rice meal in type 2 diabetic patients. We anticipate this intervention will improve glycemia and lipid profile in...
The purpose of this study is to determine if intake of whole grain foods as part of a hypocaloric diet enhances weight loss and improves cardiovascular disease risk factors in men and wome...
Modified Polyurethane Film Dressing For Skin Graft Donor Sites
The purpose of this study is to determine whether the combination of modified polyurethane film and secondary absorbent dressing for skin graft donor sites avoids the regular uncontrolled...
The Addition of Whole Grains to the Diets of Middle-school Children
The Dietary Guidelines for Americans recommend that children and adolescents "consume whole-grain products often; at least half the grains should be whole grains." Few, if any studies, exa...
Grains Reduce Adiposity and Improve Nutrition Study
Whole grain intake beneficially affects body weight, body fat and glucose metabolism, and the investigators' previous work has shown that a high whole grain intake significantly reduced bo...
