Sintered cadmium telluride nanocrystal photovoltaics: Improving chemistry to facilitate roll-to-roll fabrication /
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| Author / Creator: | Kurley, James Matthew, III, author. |
|---|---|
| Imprint: | 2016. Ann Arbor : ProQuest Dissertations & Theses, 2016 |
| Description: | 1 electronic resource (160 pages) |
| Language: | English |
| Format: | E-Resource Dissertations |
| Local Note: | School code: 0330 |
| URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/11674624 |
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| 100 | 1 | |a Kurley, James Matthew, III, |e author. | |
| 245 | 1 | 0 | |a Sintered cadmium telluride nanocrystal photovoltaics: Improving chemistry to facilitate roll-to-roll fabrication / |c Kurley, James Matthew, III. |
| 260 | |c 2016. | ||
| 264 | 1 | |a Ann Arbor : |b ProQuest Dissertations & Theses, |c 2016 | |
| 300 | |a 1 electronic resource (160 pages) | ||
| 336 | |a text |b txt |2 rdacontent | ||
| 337 | |a computer |b c |2 rdamedia | ||
| 338 | |a online resource |b cr |2 rdacarrier | ||
| 500 | |a Advisors: Dmitri V. Talapin Committee members: Phillipe Guyot-Sionnest; Luping Yu. | ||
| 502 | |b Ph.D. |c University of Chicago; Physical Sciences Division; Department of Chemistry |d 2016. | ||
| 510 | 4 | |a Dissertation Abstracts International, |c Volume: 78-06(E), Section: B. | |
| 520 | |a Recent interest in clean, renewable energy has increased importance on cost-effective and materials efficient deposition methods. Solution-processed solar cells utilizing cadmium telluride nanocrystal inks offer a viable method for reducing cost, increasing materials effectiveness, and decreasing the need for fossil fuels in the near future. Initial work focused on developing a useful platform for testing new chemistries for solubilizing and depositing nanocrystal inks. Layer-by-layer deposition using a combination of spincoating, cadmium chloride treatment, and annealing created a photovoltaic-grade CdTe absorber layer. In conjunction with layer-by-layer deposition, a device architecture of ITO/CdTe/ZnO/Al was utilized to create power conversion efficiencies of over 12% with the help of current/light soaking. Detailed exploration of device geometry, capacitance measurements, and intensity- and temperature-dependent testing determined the ITO/CdTe interface required additional scrutiny. This initial investigation sparked three new. | ||
| 520 | |a avenues of research: create an Ohmic contact to CdTe, remove the cadmium chloride bath treatment, and create a roll-to-roll friendly process. Improved contact between ITO and CdTe was achieved by using a variety of materials already proven to create Ohmic contact to CdTe. While most of these materials were previously employed using standard approaches, solution-processed analogs were explored. The cadmium chloride bath treatment proved inconsistent, wasteful, and difficult to utilize quickly. It was removed by using trichlorocadmate-capped nanocrystals to combine the semiconductor with the required grain growth agent. To establish roll-to-roll friendly process, the deposition method was improved, heating source changed, and cadmium chloride bath step was removed. Spraycoating or doctor-blading the trichlorocadmate-capped nanocrystals followed by annealing with an IR lamp established a process that can deposit CdTe in a high throughput manner. | ||
| 546 | |a English | ||
| 590 | |a School code: 0330 | ||
| 690 | |a Physical chemistry. | ||
| 690 | |a Materials science. | ||
| 690 | |a Energy. | ||
| 710 | 2 | |a University of Chicago. |e degree granting institution. | |
| 720 | 1 | |a Dmitri V. Talapin |e degree supervisor. | |
| 856 | 4 | 0 | |u https://doi.org/10.6082/M1N014MT |y Knowledge@UChicago |
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| 928 | |t Library of Congress classification |l Online |c UC-FullText |u https://doi.org/10.6082/M1N014MT |z Knowledge@UChicago |g ebooks |i 13287506 | ||