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Personal profile

Education/Academic qualification

PHD, Cornell University

… → 1991

MS, North Carolina State University

… → 1986

BS, North Carolina State University

… → 1984

Fingerprint Fingerprint is based on mining the text of the experts' scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.

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Research Output 1900 2019

An approach to optimize pre-annealing aging and anneal conditions to improve photovoltaic performance of perovskite solar cells

Sanni, D. M., Chen, Y., Yerramilli, A. S., Ntsoenzok, E., Asare, J., Adeniji, S. A., Oyelade, O. V., Fashina, A. A. & Alford, T., Mar 1 2019, In : Materials for Renewable and Sustainable Energy. 8, 1, 3.

Research output: Contribution to journalArticle

Aging of materials
Annealing
Perovskite
Lead
Temperature

Effect of excessive Pb on the stability and performance of Pb-halide perovskite solar cells against photo-induced degradation

Yerramilli, A. S., Chen, Y. & Alford, T., Mar 1 2019, In : MRS Communications. 9, 1, p. 189-193 5 p.

Research output: Contribution to journalArticle

Degradation
ITO glass
Passivation
Grain boundaries
Acetates

Improved performance of inverted perovskite solar cells due to the incorporation of zirconium acetylacetonate buffer layer

Yerramilli, A. S., Chen, Y., Knight, A., Gogoi, B., Li, L., Song, Y., Shen, Y. & Alford, T., Sep 15 2019, In : Solar Energy Materials and Solar Cells. 200, 109927.

Research output: Contribution to journalArticle

Buffer layers
Zirconium
Dark currents
Conversion efficiency
Photoluminescence

Introduction of nitrogen gas flow and precursor aging process to improve the efficiency of the lead acetate derived CH3NH3PbI3 perovskite solar cells

Chen, Y., Li, L., Yerramilli, A. S., Qu, W., Song, Y., Li, N., Shen, Y. & Alford, T., Feb 1 2019, In : Solar Energy Materials and Solar Cells. 190, p. 49-56 8 p.

Research output: Contribution to journalArticle

Flow of gases
Nitrogen
Lead
Aging of materials
Phase composition
1 Citation (Scopus)

Control of the Nucleation and Growth of the Lead Acetate Solution Derived CH 3 NH 3 PbI 3 Films Leads to Enhanced Power Conversion Efficiency

Chen, Y., Yerramilli, A. S., Li, L., Qu, W., Shen, Y., Song, Y. & Alford, T., Jun 25 2018, In : ACS Applied Energy Materials. 1, 6, p. 2898-2906 9 p.

Research output: Contribution to journalArticle

Conversion efficiency
Nucleation
Lead
Spin coating
Solar cells

Projects 1997 2020