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Enhanced charge carrier mobility and lifetime suppress hysteresis and improve efficiency in planar perovskite solar cells†
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2017-12-05 00:00:00 , DOI: 10.1039/c7ee02901b Silver-Hamill Turren-Cruz 1, 2, 3, 4, 5 , Michael Saliba 1, 2, 3, 4 , Matthew T. Mayer 1, 2, 3, 4 , Hector Juárez-Santiesteban 5, 6, 7, 8, 9 , Xavier Mathew 10, 11, 12, 13 , Lea Nienhaus 14, 15, 16 , Wolfgang Tress 1, 2, 3, 4 , Matthew P. Erodici 16, 17, 18 , Meng-Ju Sher 16, 17, 18 , Moungi G. Bawendi 14, 15, 16 , Michael Grätzel 1, 2, 3, 4 , Antonio Abate 19, 20, 21, 22, 23 , Anders Hagfeldt 1, 2, 3, 4 , Juan-Pablo Correa-Baena 1, 2, 3, 4, 14
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2017-12-05 00:00:00 , DOI: 10.1039/c7ee02901b Silver-Hamill Turren-Cruz 1, 2, 3, 4, 5 , Michael Saliba 1, 2, 3, 4 , Matthew T. Mayer 1, 2, 3, 4 , Hector Juárez-Santiesteban 5, 6, 7, 8, 9 , Xavier Mathew 10, 11, 12, 13 , Lea Nienhaus 14, 15, 16 , Wolfgang Tress 1, 2, 3, 4 , Matthew P. Erodici 16, 17, 18 , Meng-Ju Sher 16, 17, 18 , Moungi G. Bawendi 14, 15, 16 , Michael Grätzel 1, 2, 3, 4 , Antonio Abate 19, 20, 21, 22, 23 , Anders Hagfeldt 1, 2, 3, 4 , Juan-Pablo Correa-Baena 1, 2, 3, 4, 14
Affiliation
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Perovskite solar cells (PSCs) are very promising lab-scale technologies to deliver inexpensive solar electricity. Low-temperature, planar PSCs are of particularly interest for large-scale deployment due to their inherent suitability for flexible substrates and potential for silicon/perovskite tandems. So far, planar PSCs have been prone to large current–voltage hysteresis and low stabilized power output due to a number of issues associated with this kind of device configuration. We find that the suppression of the yellow-phase impurity (∂-FAPbI3) present in formamidium-based perovskites, by RbI addition, contributes to low hysteresis, higher charge carrier mobility, long-lived carrier lifetimes and a champion stabilized power output of 20.3% using SnOx as the electron selective contact. We study the effects of these impurities on the transient behavior that defines hysteresis and its relation to ionic movement. In addition, we find that the formation of a RbPbI3 phase does not significantly affect the charge carrier lifetimes and consequently the performance of the devices. This brings new physical insights onto the role of different impurities in perovskite solar cells, which make these materials so remarkable.
中文翻译：
增强的载流子迁移率和寿命可抑制磁滞现象，并提高平面钙钛矿太阳能电池的效率†
钙钛矿太阳能电池（PSC）是非常有前途的实验室规模技术，可提供廉价的太阳能。低温平面型PSC由于其固有的适用于柔性基板的特性以及硅/钙钛矿双极膜的潜力，因此特别适合大规模部署。到目前为止，由于与此类设备配置相关的许多问题，平面型PSC容易出现大电流-电压迟滞和稳定输出功率低的问题。我们发现，黄色相杂质（∂-FAPbI的抑制3）以基于formamidium-钙钛矿，通过打点此外，有助于低滞后，更高的电荷载流子迁移率，长寿命的载流子寿命和的冠军稳定电源输出使用SnO x的20.3％作为电子选择性接触。我们研究了这些杂质对瞬态行为的影响，瞬态行为定义了磁滞及其与离子运动的关系。另外，我们发现RbPbI 3相的形成不会显着影响电荷载流子的寿命并因此不会影响器件的性能。这为钙钛矿型太阳能电池中不同杂质的作用带来了新的物理见解，这使这些材料非常引人注目。
更新日期：2017-12-05
中文翻译：
增强的载流子迁移率和寿命可抑制磁滞现象，并提高平面钙钛矿太阳能电池的效率†
钙钛矿太阳能电池（PSC）是非常有前途的实验室规模技术，可提供廉价的太阳能。低温平面型PSC由于其固有的适用于柔性基板的特性以及硅/钙钛矿双极膜的潜力，因此特别适合大规模部署。到目前为止，由于与此类设备配置相关的许多问题，平面型PSC容易出现大电流-电压迟滞和稳定输出功率低的问题。我们发现，黄色相杂质（∂-FAPbI的抑制3）以基于formamidium-钙钛矿，通过打点此外，有助于低滞后，更高的电荷载流子迁移率，长寿命的载流子寿命和的冠军稳定电源输出使用SnO x的20.3％作为电子选择性接触。我们研究了这些杂质对瞬态行为的影响，瞬态行为定义了磁滞及其与离子运动的关系。另外，我们发现RbPbI 3相的形成不会显着影响电荷载流子的寿命并因此不会影响器件的性能。这为钙钛矿型太阳能电池中不同杂质的作用带来了新的物理见解，这使这些材料非常引人注目。
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