@inproceedings{11e5ea867e13433080544ea3d45f77de,
title = "Colloidal quantum dots based infrared photodiodes",
abstract = "We report in this paper our studies on the photoconductivity and photovoltaic effects of colloidal PbSe nanocrystal quantum dots (NQDs) which were embedded in conductive polymer matrices to form hybrid polymer/NQD infrared photodiodes. The generation of photocarriers in PbSe NQDs and their transport in NQD-polymer composites were described by a simplified band diagram picture of the device. Both photocurrent and photovoltage outputs were measured from the NQD-incorporated photodiode upon the illumination of near-infrared (NIR) light, whereas the net polymer-based devices do not exhibit any photoresponsivity. The intensity dependence of the photocurrent indicates the pseudomonomolecular recombination kinetics in the NQD-polymer composite. The measured photocurrent spectrum is consistent with the absorption characteristic of PbSe NQDs, Further enhancement of the photodiode efficiency can be achieved by engineering the nanocrystal surface to reduce the potential barriers due to the ligant capping molecules. copyright The Electrochemical Society.",
author = "Jian Xu and Dehu Cui and Shengyong Xu and Gary Paradee and Michael Gerhold",
note = "Funding Information: HELIOS research grant No. HRC-ID 061939. Funding Information: This study was supported by a HELIOS research grant (HRC-ID 061939). Helios GmbH was not involved in study design, data collection or interpretation, or publication of this study. This study was an investigator-initiated trial.; Photoboltaics for the 21st Century III - 208th Electrochemical Society Meeting ; Conference date: 16-10-2005 Through 21-10-2005",
year = "2006",
doi = "10.1149/1.2209390",
language = "English (US)",
series = "ECS Transactions",
publisher = "Electrochemical Society Inc.",
number = "33",
pages = "17--31",
booktitle = "Photovoltaics for the 21st Century III",
edition = "33",
}
