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(Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting
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| Zeitschriftentitel: | ECS Meeting Abstracts |
|---|---|
| Personen und Körperschaften: | , , |
| In: | ECS Meeting Abstracts, MA2019-02, 2019, 41, S. 1910-1910 |
| Format: | E-Article |
| Sprache: | Unbestimmt |
| veröffentlicht: |
The Electrochemical Society
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| Schlagwörter: |
| author_facet |
Jang, Ji-Hyun Ahn, Hyo-Jin Yoon, Ki-Yong Jang, Ji-Hyun Ahn, Hyo-Jin Yoon, Ki-Yong |
|---|---|
| author |
Jang, Ji-Hyun Ahn, Hyo-Jin Yoon, Ki-Yong |
| spellingShingle |
Jang, Ji-Hyun Ahn, Hyo-Jin Yoon, Ki-Yong ECS Meeting Abstracts (Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting General Medicine |
| author_sort |
jang, ji-hyun |
| spelling |
Jang, Ji-Hyun Ahn, Hyo-Jin Yoon, Ki-Yong 2151-2043 The Electrochemical Society General Medicine http://dx.doi.org/10.1149/ma2019-02/41/1910 <jats:p> Titanium and boron hetero-doped hematite photoanodes with an n-n+ homo-junction showed significantly increased photoelectrochemical (PEC) water splitting activity. The Ti and B co-doping in hematite not only suppresses the number of Ti<jats:sup>4+</jats:sup>and Sn<jats:sup>4+</jats:sup>ions that cause electron hole pair (EHP) recombination at the hematite surface but also generates an internal electric field for easy hole extraction. The Ti:B-Fe<jats:sub>2</jats:sub>O<jats:sub>3 </jats:sub>with a 890 nm height and 70 nm diameter converted the incident photons to EHPs with much reduced recombination and exhibited an excellent photocurrent density of 1.92 mA/cm<jats:sup>2</jats:sup>at 1.23 V<jats:sub>RHE</jats:sub>and 2.83 mA/cm<jats:sup>2</jats:sup>at 1.50 V<jats:sub>RHE</jats:sub>.Our co-doping strategy provides a straightforward way of addressing the chronic short-hole diffusion length issue that causes a high electron hole recombination rate and thus the critical length limitation of an ideal hematite photoanode, to potentially improve the performance of PEC devices. </jats:p> (Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting ECS Meeting Abstracts |
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| title |
(Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_unstemmed |
(Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_full |
(Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_fullStr |
(Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_full_unstemmed |
(Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_short |
(Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_sort |
(invited) co-doping for solving a short-hole diffusion length issue of hematite in water splitting |
| topic |
General Medicine |
| url |
http://dx.doi.org/10.1149/ma2019-02/41/1910 |
| publishDate |
2019 |
| physical |
1910-1910 |
| description |
<jats:p> Titanium and boron hetero-doped hematite photoanodes with an n-n+ homo-junction showed significantly increased photoelectrochemical (PEC) water splitting activity. The Ti and B co-doping in hematite not only suppresses the number of Ti<jats:sup>4+</jats:sup>and Sn<jats:sup>4+</jats:sup>ions that cause electron hole pair (EHP) recombination at the hematite surface but also generates an internal electric field for easy hole extraction. The Ti:B-Fe<jats:sub>2</jats:sub>O<jats:sub>3 </jats:sub>with a 890 nm height and 70 nm diameter converted the incident photons to EHPs with much reduced recombination and exhibited an excellent photocurrent density of 1.92 mA/cm<jats:sup>2</jats:sup>at 1.23 V<jats:sub>RHE</jats:sub>and 2.83 mA/cm<jats:sup>2</jats:sup>at 1.50 V<jats:sub>RHE</jats:sub>.Our co-doping strategy provides a straightforward way of addressing the chronic short-hole diffusion length issue that causes a high electron hole recombination rate and thus the critical length limitation of an ideal hematite photoanode, to potentially improve the performance of PEC devices. </jats:p> |
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| author | Jang, Ji-Hyun, Ahn, Hyo-Jin, Yoon, Ki-Yong |
| author_facet | Jang, Ji-Hyun, Ahn, Hyo-Jin, Yoon, Ki-Yong, Jang, Ji-Hyun, Ahn, Hyo-Jin, Yoon, Ki-Yong |
| author_sort | jang, ji-hyun |
| container_issue | 41 |
| container_start_page | 1910 |
| container_title | ECS Meeting Abstracts |
| container_volume | MA2019-02 |
| description | <jats:p> Titanium and boron hetero-doped hematite photoanodes with an n-n+ homo-junction showed significantly increased photoelectrochemical (PEC) water splitting activity. The Ti and B co-doping in hematite not only suppresses the number of Ti<jats:sup>4+</jats:sup>and Sn<jats:sup>4+</jats:sup>ions that cause electron hole pair (EHP) recombination at the hematite surface but also generates an internal electric field for easy hole extraction. The Ti:B-Fe<jats:sub>2</jats:sub>O<jats:sub>3 </jats:sub>with a 890 nm height and 70 nm diameter converted the incident photons to EHPs with much reduced recombination and exhibited an excellent photocurrent density of 1.92 mA/cm<jats:sup>2</jats:sup>at 1.23 V<jats:sub>RHE</jats:sub>and 2.83 mA/cm<jats:sup>2</jats:sup>at 1.50 V<jats:sub>RHE</jats:sub>.Our co-doping strategy provides a straightforward way of addressing the chronic short-hole diffusion length issue that causes a high electron hole recombination rate and thus the critical length limitation of an ideal hematite photoanode, to potentially improve the performance of PEC devices. </jats:p> |
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| physical | 1910-1910 |
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| publisher | The Electrochemical Society |
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| spelling | Jang, Ji-Hyun Ahn, Hyo-Jin Yoon, Ki-Yong 2151-2043 The Electrochemical Society General Medicine http://dx.doi.org/10.1149/ma2019-02/41/1910 <jats:p> Titanium and boron hetero-doped hematite photoanodes with an n-n+ homo-junction showed significantly increased photoelectrochemical (PEC) water splitting activity. The Ti and B co-doping in hematite not only suppresses the number of Ti<jats:sup>4+</jats:sup>and Sn<jats:sup>4+</jats:sup>ions that cause electron hole pair (EHP) recombination at the hematite surface but also generates an internal electric field for easy hole extraction. The Ti:B-Fe<jats:sub>2</jats:sub>O<jats:sub>3 </jats:sub>with a 890 nm height and 70 nm diameter converted the incident photons to EHPs with much reduced recombination and exhibited an excellent photocurrent density of 1.92 mA/cm<jats:sup>2</jats:sup>at 1.23 V<jats:sub>RHE</jats:sub>and 2.83 mA/cm<jats:sup>2</jats:sup>at 1.50 V<jats:sub>RHE</jats:sub>.Our co-doping strategy provides a straightforward way of addressing the chronic short-hole diffusion length issue that causes a high electron hole recombination rate and thus the critical length limitation of an ideal hematite photoanode, to potentially improve the performance of PEC devices. </jats:p> (Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting ECS Meeting Abstracts |
| spellingShingle | Jang, Ji-Hyun, Ahn, Hyo-Jin, Yoon, Ki-Yong, ECS Meeting Abstracts, (Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting, General Medicine |
| title | (Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_full | (Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_fullStr | (Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_full_unstemmed | (Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_short | (Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| title_sort | (invited) co-doping for solving a short-hole diffusion length issue of hematite in water splitting |
| title_unstemmed | (Invited) Co-Doping for Solving a Short-Hole Diffusion Length Issue of Hematite in Water Splitting |
| topic | General Medicine |
| url | http://dx.doi.org/10.1149/ma2019-02/41/1910 |