Imaging the Photo-Induced Electronic Properties of Grain Size Evolution in Perovskite-based Solar Cell by Scanning Tunneling Microscopy
碩士 === 國立臺灣師範大學 === 物理學系 === 104 === The recent studies show that intermixing quantum crystal PbS with the active light-absorber (〖CH〗_3 〖NH〗_3 〖PbI〗_(3-x) 〖Cl〗_x) film in perovskite solar cell enlarges the grain size, which can be exceeded to 4µm. The quantum crystal in perovskite increases not onl...
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ndltd-TW-104NTNU51980112017-09-03T04:25:56Z http://ndltd.ncl.edu.tw/handle/21754841840687437802 Imaging the Photo-Induced Electronic Properties of Grain Size Evolution in Perovskite-based Solar Cell by Scanning Tunneling Microscopy 利用掃描穿隧顯微鏡量測鈣鈦礦太陽能電池晶粒的光致電子特性 Cheng, Ming-Chih 鄭名志 碩士 國立臺灣師範大學 物理學系 104 The recent studies show that intermixing quantum crystal PbS with the active light-absorber (〖CH〗_3 〖NH〗_3 〖PbI〗_(3-x) 〖Cl〗_x) film in perovskite solar cell enlarges the grain size, which can be exceeded to 4µm. The quantum crystal in perovskite increases not only power conversion efficiency over 17.4%, but also the diffusion length. In order to investigate the variation of the electronic properties of the perovskite solar cell film in dark and under illumination condition, scanning tunneling microscopy (STM) was utilized to study the topography images and localized electronic properties of the perovskite active light-absorber. In this work, the electronic dI/dV spectroscopy measurement of perovskite intermixing PbS in dark demonstrates n-type semiconductor behavior. Moreover, the increase of density of states at valence band of perovskite film reveals the augment of hole carrier concentration under illumination. The shift of electronic dI/dV spectroscopy of perovskite with PbS compared to that of the perovskite without PbS shows that the magnitude of carriers separation is associated with the grain size. Also the grain size enlarged is beneficial for power conversion efficiency (PCE). Chiu, Ya-Ping 邱雅萍 2016 學位論文 ; thesis 53 zh-TW |
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碩士 === 國立臺灣師範大學 === 物理學系 === 104 === The recent studies show that intermixing quantum crystal PbS with the active light-absorber (〖CH〗_3 〖NH〗_3 〖PbI〗_(3-x) 〖Cl〗_x) film in perovskite solar cell enlarges the grain size, which can be exceeded to 4µm. The quantum crystal in perovskite increases not only power conversion efficiency over 17.4%, but also the diffusion length.
In order to investigate the variation of the electronic properties of the perovskite solar cell film in dark and under illumination condition, scanning tunneling microscopy (STM) was utilized to study the topography images and localized electronic properties of the perovskite active light-absorber.
In this work, the electronic dI/dV spectroscopy measurement of perovskite intermixing PbS in dark demonstrates n-type semiconductor behavior. Moreover, the increase of density of states at valence band of perovskite film reveals the augment of hole carrier concentration under illumination. The shift of electronic dI/dV spectroscopy of perovskite with PbS compared to that of the perovskite without PbS shows that the magnitude of carriers separation is associated with the grain size. Also the grain size enlarged is beneficial for power conversion efficiency (PCE).
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author2 |
Chiu, Ya-Ping |
author_facet |
Chiu, Ya-Ping Cheng, Ming-Chih 鄭名志 |
author |
Cheng, Ming-Chih 鄭名志 |
spellingShingle |
Cheng, Ming-Chih 鄭名志 Imaging the Photo-Induced Electronic Properties of Grain Size Evolution in Perovskite-based Solar Cell by Scanning Tunneling Microscopy |
author_sort |
Cheng, Ming-Chih |
title |
Imaging the Photo-Induced Electronic Properties of Grain Size Evolution in Perovskite-based Solar Cell by Scanning Tunneling Microscopy |
title_short |
Imaging the Photo-Induced Electronic Properties of Grain Size Evolution in Perovskite-based Solar Cell by Scanning Tunneling Microscopy |
title_full |
Imaging the Photo-Induced Electronic Properties of Grain Size Evolution in Perovskite-based Solar Cell by Scanning Tunneling Microscopy |
title_fullStr |
Imaging the Photo-Induced Electronic Properties of Grain Size Evolution in Perovskite-based Solar Cell by Scanning Tunneling Microscopy |
title_full_unstemmed |
Imaging the Photo-Induced Electronic Properties of Grain Size Evolution in Perovskite-based Solar Cell by Scanning Tunneling Microscopy |
title_sort |
imaging the photo-induced electronic properties of grain size evolution in perovskite-based solar cell by scanning tunneling microscopy |
publishDate |
2016 |
url |
http://ndltd.ncl.edu.tw/handle/21754841840687437802 |
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