Journal
NANO LETTERS
Volume 14, Issue 2, Pages 765-773Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl404101p
Keywords
Light management; transparent paper; wood fibers; optical haze; solar cells
Categories
Funding
- Air Force Office of Scientific Research (AFOSR) Investigator Program
- China Scholarship Council (CSC)
- Maryland Nano Center and its NispLab
- NSF as a MRSEC (Materials Research Science and Engineering Center) Shared Experimental Facility
- National Science Foundation [ECCS-1201384, ECCS-1252623, 1069076, 1129826]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1129826] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1252623] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1201384] Funding Source: National Science Foundation
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Solar cell substrates require high optical transparency but also prefer high optical haze to increase the light scattering and consequently the absorption in the active materials. Unfortunately, there is a trade-off between these optical properties, which is exemplified by common transparent paper substrates exhibiting a transparency of about 90% yet a low optical haze (<20%). In this work, we introduce a novel transparent paper made of wood fibers that displays both ultrahigh optical transparency (similar to 96%) and ultrahigh haze (similar to 60%), thus delivering an optimal substrate design for solar cell devices. Compared to previously demonstrated nanopaper composed of wood-based cellulose nanofibers, our novel transparent paper has better dual performance in transmittance and haze but also is fabricated at a much lower cost. This high-performance, low-cost transparent paper is a potentially revolutionary material that may influence a new generation of environmentally friendly printed electronics.
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