DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High mobility high efficiency organic films based on pure organic materials

Abstract

A method of purifying small molecule organic material, performed as a series of operations beginning with a first sample of the organic small molecule material. The first step is to purify the organic small molecule material by thermal gradient sublimation. The second step is to test the purity of at least one sample from the purified organic small molecule material by spectroscopy. The third step is to repeat the first through third steps on the purified small molecule material if the spectroscopic testing reveals any peaks exceeding a threshold percentage of a magnitude of a characteristic peak of a target organic small molecule. The steps are performed at least twice. The threshold percentage is at most 10%. Preferably the threshold percentage is 5% and more preferably 2%. The threshold percentage may be selected based on the spectra of past samples that achieved target performance characteristics in finished devices.

Inventors:
 [1];  [1]
  1. Ann Arbor, MI
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
985864
Patent Number(s):
7482195
Application Number:
11/529,367
Assignee:
The Trustees of Princeton University (Princeton, NJ)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
XAT-5-33636-03
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Salzman, Rhonda F, and Forrest, Stephen R. High mobility high efficiency organic films based on pure organic materials. United States: N. p., 2009. Web.
Salzman, Rhonda F, & Forrest, Stephen R. High mobility high efficiency organic films based on pure organic materials. United States.
Salzman, Rhonda F, and Forrest, Stephen R. Tue . "High mobility high efficiency organic films based on pure organic materials". United States. https://www.osti.gov/servlets/purl/985864.
@article{osti_985864,
title = {High mobility high efficiency organic films based on pure organic materials},
author = {Salzman, Rhonda F and Forrest, Stephen R},
abstractNote = {A method of purifying small molecule organic material, performed as a series of operations beginning with a first sample of the organic small molecule material. The first step is to purify the organic small molecule material by thermal gradient sublimation. The second step is to test the purity of at least one sample from the purified organic small molecule material by spectroscopy. The third step is to repeat the first through third steps on the purified small molecule material if the spectroscopic testing reveals any peaks exceeding a threshold percentage of a magnitude of a characteristic peak of a target organic small molecule. The steps are performed at least twice. The threshold percentage is at most 10%. Preferably the threshold percentage is 5% and more preferably 2%. The threshold percentage may be selected based on the spectra of past samples that achieved target performance characteristics in finished devices.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {1}
}

Works referenced in this record:

Investigations of n/p-junction photovoltaic cells of perylenetetracarboxylic acid diimides and phthalocyanines
journal, January 1995


Very-high-efficiency double-heterostructure copper phthalocyanine/C60 photovoltaic cells
journal, July 2001


Investigations of materials and device structures for organic semiconductor solar cells
journal, January 1993


Synthesis of high-purity phthalocyanines (pc): high intrinsic conductivities in the molecular conductors H2(pc)I and Ni(pc)I
journal, August 1993


Charge-Dipole Model for the Universal Field Dependence of Mobilities in Molecularly Doped Polymers
journal, July 1996


Controlled growth of a molecular bulk heterojunction photovoltaic cell
journal, December 2004


Time-of-Flight Measurement of Lateral Carrier Mobility in Organic Thin Films
journal, April 2004


Organic field-effect transistors using copper phthalocyanine thin film
journal, April 2003


The effects of copper phthalocyanine purity on organic solar cell performance
journal, December 2005


Charge transport in nickel phthalocyanine crystals. I. Ohmic and space-charge-limited currents in vacuum ambient
journal, January 1977


A Hybrid Planar-Mixed Molecular Heterojunction Photovoltaic Cell
journal, January 2005


Efficient photon harvesting at high optical intensities in ultrathin organic double-heterostructure photovoltaic diodes
journal, May 2000


4.2% efficient organic photovoltaic cells with low series resistances
journal, April 2004


Organic small molecule solar cells with a homogeneously mixed copper phthalocyanine: C60 active layer
journal, May 2004


The rating of photovoltaic performance
journal, January 1999


Purification and characterization of phthalocyanines
journal, October 1982


Two‐layer organic photovoltaic cell
journal, January 1986


Evaluation of Electrical Properties of Evaporated Thin Films of Metal-Free, Copper and Lead Phthalocyanines by In-Situ Field Effect Measurements
journal, November 1997