Interface modification of CH<inf>3</inf>NH<inf>3</inf>PbI<inf>3</inf>/PCBM by pre-heat treatment for efficiency enhancement of perovskite solar cells
© 2017 Elsevier B.V. An interfacial modification of CH3NH3PbI3/PCBM is investigated by pre-heating PCBM solution before spin-coating on the CH3NH3PbI3layer.By adjusting PCBM concentration, PCBM films were optimized to form homogeneous films. Besides, the pre-heat treatment of PCBM solution exhibits...
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th-cmuir.6653943832-574822018-09-05T03:53:34Z Interface modification of CH<inf>3</inf>NH<inf>3</inf>PbI<inf>3</inf>/PCBM by pre-heat treatment for efficiency enhancement of perovskite solar cells Sutthipoj Sutthana Pipat Ruankham Duangmanee Wongratanaphisan Atcharawon Gardchareon Surachet Phadungdhitidhada Dheerawan Boonyawan Supab Choopun Materials Science Physics and Astronomy © 2017 Elsevier B.V. An interfacial modification of CH3NH3PbI3/PCBM is investigated by pre-heating PCBM solution before spin-coating on the CH3NH3PbI3layer.By adjusting PCBM concentration, PCBM films were optimized to form homogeneous films. Besides, the pre-heat treatment of PCBM solution exhibits a better covered area over CH3NH3PbI3layer with reduced pinhole compared with the non-heat treatment. This can be explained by the higher thermal energy PCBM molecules of the pre-heat solution leading to higher molecule mobility that can reorganizes a structural as well as enhance the diffusion and enhance coverage of PCBM films over CH3NH3PbI3. The optimized cell is enhanced with average power conversion efficiency from 4.59% up to 5.76% (6.44% maximum) by heat treatment. To investigate interface between CH3NH3PbI3and PCBM, the contact angle was measured and found that the contact angle of PCBM films were higher after heat treatment suggesting re-alignment and better orientation of PCBM on perovskite film. The better orientation of PCBM can be explained in term of hydrophilic/hydrophobic property of the interface between CH3NH3PbI3and PCBM. These results suggest that pre-heat treatment of PCBM solution has ability to modify the interface for better orientation of PCBM and resulting in efficiency enhancement due to better carrier transport direction at the CH3NH3PbI3/PCBM interfaces for perovskite solar cells. In addition, the better orientation that the head (non-polar)is oriented at outer surface can also prevent the solar cells from surrounding moisture. 2018-09-05T03:43:11Z 2018-09-05T03:43:11Z 2017-04-01 Journal 15671739 2-s2.0-85011106107 10.1016/j.cap.2017.01.015 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85011106107&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/57482 |
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Materials Science Physics and Astronomy Sutthipoj Sutthana Pipat Ruankham Duangmanee Wongratanaphisan Atcharawon Gardchareon Surachet Phadungdhitidhada Dheerawan Boonyawan Supab Choopun Interface modification of CH<inf>3</inf>NH<inf>3</inf>PbI<inf>3</inf>/PCBM by pre-heat treatment for efficiency enhancement of perovskite solar cells |
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© 2017 Elsevier B.V. An interfacial modification of CH3NH3PbI3/PCBM is investigated by pre-heating PCBM solution before spin-coating on the CH3NH3PbI3layer.By adjusting PCBM concentration, PCBM films were optimized to form homogeneous films. Besides, the pre-heat treatment of PCBM solution exhibits a better covered area over CH3NH3PbI3layer with reduced pinhole compared with the non-heat treatment. This can be explained by the higher thermal energy PCBM molecules of the pre-heat solution leading to higher molecule mobility that can reorganizes a structural as well as enhance the diffusion and enhance coverage of PCBM films over CH3NH3PbI3. The optimized cell is enhanced with average power conversion efficiency from 4.59% up to 5.76% (6.44% maximum) by heat treatment. To investigate interface between CH3NH3PbI3and PCBM, the contact angle was measured and found that the contact angle of PCBM films were higher after heat treatment suggesting re-alignment and better orientation of PCBM on perovskite film. The better orientation of PCBM can be explained in term of hydrophilic/hydrophobic property of the interface between CH3NH3PbI3and PCBM. These results suggest that pre-heat treatment of PCBM solution has ability to modify the interface for better orientation of PCBM and resulting in efficiency enhancement due to better carrier transport direction at the CH3NH3PbI3/PCBM interfaces for perovskite solar cells. In addition, the better orientation that the head (non-polar)is oriented at outer surface can also prevent the solar cells from surrounding moisture. |
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Journal |
author |
Sutthipoj Sutthana Pipat Ruankham Duangmanee Wongratanaphisan Atcharawon Gardchareon Surachet Phadungdhitidhada Dheerawan Boonyawan Supab Choopun |
author_facet |
Sutthipoj Sutthana Pipat Ruankham Duangmanee Wongratanaphisan Atcharawon Gardchareon Surachet Phadungdhitidhada Dheerawan Boonyawan Supab Choopun |
author_sort |
Sutthipoj Sutthana |
title |
Interface modification of CH<inf>3</inf>NH<inf>3</inf>PbI<inf>3</inf>/PCBM by pre-heat treatment for efficiency enhancement of perovskite solar cells |
title_short |
Interface modification of CH<inf>3</inf>NH<inf>3</inf>PbI<inf>3</inf>/PCBM by pre-heat treatment for efficiency enhancement of perovskite solar cells |
title_full |
Interface modification of CH<inf>3</inf>NH<inf>3</inf>PbI<inf>3</inf>/PCBM by pre-heat treatment for efficiency enhancement of perovskite solar cells |
title_fullStr |
Interface modification of CH<inf>3</inf>NH<inf>3</inf>PbI<inf>3</inf>/PCBM by pre-heat treatment for efficiency enhancement of perovskite solar cells |
title_full_unstemmed |
Interface modification of CH<inf>3</inf>NH<inf>3</inf>PbI<inf>3</inf>/PCBM by pre-heat treatment for efficiency enhancement of perovskite solar cells |
title_sort |
interface modification of ch<inf>3</inf>nh<inf>3</inf>pbi<inf>3</inf>/pcbm by pre-heat treatment for efficiency enhancement of perovskite solar cells |
publishDate |
2018 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85011106107&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/57482 |
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