NDLI: Issues in the physical measurement of the intermediate band effect

Content Provider	IEEE Xplore Digital Library
Author	Bremner, S. Ghosh, K. Ekins-Daukes, N. Honsberg, C. Goodnick, S.
Copyright Year	2012
Description	Author affiliation: Arizona State University, Tempe, USA (Ghosh, K.; Honsberg, C.; Goodnick, S.) \|\| Imperial College, London England (Ekins-Daukes, N.) \|\| University of New South Wales, Sydney Australia (Bremner, S.)
Abstract	The intermediate band (IB) solar cell offers a route to higher efficiency solar cells by inserting a band into the band gap of large band gap material. Theoretically, the open circuit voltage of the IB solar cell is close to that of the high band gap regions, and the current is increased through the addition of the intermediate band. However, experimental results have shown a decrease in the open circuit voltage, and a small increase in the short circuit current. We explain the decrease in Voc, as well as the small increase in Jsc though a thermodynamic and physical model. These models show that both these results are consistent with the absence of multiple quasi-Fermi levels. Because of the importance of realizing multiple quasi-Fermi levels, the definitive proof of this effect is critical in demonstrating the viability of the intermediate band, but show that demonstrated indicators of an intermediate band may be caused by other physical mechanisms. Instead, a key indicator of a quasi-Fermi level separation not explained by non-idealities are the features associated with the intermediate band quasi-Fermi level crossing the intermediate band energy level, demonstrated by shifting peak energies.
Starting Page	000641
Ending Page	000646
File Size	1299524
Page Count	6
File Format	PDF
ISBN	9781467300643
ISSN	01608371
e-ISBN	9781467300667
DOI	10.1109/PVSC.2012.6317692
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Absorption Photovoltaic cells Scattering Photonic band gap Sociology Statistics Materials
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in