Abstract
Organic vapor-phase deposition is used to grow photovoltaic cells consisting of molecular compounds that require high-evaporation temperatures. The organic crystal size and film morphology are controlled by adjusting the source evaporation temperature, substrate temperature, carrier gas flow rate, and chamber pressure. The resulting surface morphology produces a highly folded donor–acceptor interface with a fourfold increase in area compared with a planar heterojunction, leading to an increased exciton diffusion efficiency, and hence an 80% increase in photovoltaic cell power conversion efficiency. Mixed organic layers with controlled constituent ratios and layer thicknesses are grown by the simultaneous codeposition of multiple source materials. Photovoltaic cells comprised of a copper phthalocyanine:C60 mixed layer show comparable performance to analogous vacuum-deposited cells.
Keywords
Organic solar cellMaterials scienceEnergy conversion efficiencyEvaporationHeterojunctionChemical vapor depositionChemical engineeringThin filmSolar cellDeposition (geology)Layer (electronics)Substrate (aquarium)OptoelectronicsNanotechnologyComposite materialPolymer
Affiliated Institutions
Related Publications
Morphological Control for High Performance, Solution‐Processed Planar Heterojunction Perovskite Solar Cells
Organometal trihalide perovskite based solar cells have exhibited the highest efficiencies to‐date when incorporated into mesostructured composites. However, thin solid films of...
Low-temperature processed meso-superstructured to thin-film perovskite solar cells
We have reduced the processing temperature of the bulk absorber layer in CH3NH3PbI3−xClx perovskite solar cells from 500 to <150 °C and achieved power conversion efficiencies up...
Two-layer organic photovoltaic cell
A thin-film, two-layer organic photovoltaic cell has been fabricated from copper phthalocyanine and a perylene tetracarboxylic derivative. A power conversion efficiency of about...
High‐Efficiency Solar Cell with Earth‐Abundant Liquid‐Processed Absorber
A composite liquid deposition approach merging the concepts of solution and particle-based coating for multinary chalcogenide materials is demonstrated. Photovoltaic absorbers b...
Factors Limiting Device Efficiency in Organic Photovoltaics
Abstract The power conversion efficiency of the most efficient organic photovoltaic (OPV) cells has recently increased to over 10%. To enable further increases, the factors limi...
Publication Info
- Year
- 2005
- Type
- article
- Volume
- 98
- Issue
- 1
- Citations
- 110
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
110
OpenAlex
Cite This
Fan Yang,
Max Shtein,
Stephen R. Forrest
(2005).
Morphology control and material mixing by high-temperature organic vapor-phase deposition and its application to thin-film solar cells.
Journal of Applied Physics
, 98
(1)
.
https://doi.org/10.1063/1.1941480
Identifiers
- DOI
- 10.1063/1.1941480