%0 Journal Article %1 doi:10.1021/acs.jpcc.6b06799 %A Mabrouk, Sally %A Dubey, Ashish %A Zhang, Wenfeng %A Adhikari, Nirmal %A Bahrami, Behzad %A Hasan, Md Nazmul %A Yang, Shangfeng %A Qiao, Qiquan %D 2016 %J The Journal of Physical Chemistry C %K doping film-smoothing perovskite %N 43 %P 24577-24582 %R 10.1021/acs.jpcc.6b06799 %T Increased Efficiency for Perovskite Photovoltaics via Doping the PbI2 Layer %U http://dx.doi.org/10.1021/acs.jpcc.6b06799 %V 120 %X Perovskite solar cells offer tremendous potential for simple and low-cost solution-based fabrication with high power conversion efficiency. This work focused on adding an optimized amount of additive tetra-n-butylammonium triiodide (TBAI3) into the precursor PbI2 layer to improve the performance of perovskite solar cells. UV–vis absorption spectra exhibited an enhancement in the absorbance of perovskite films while AFM images showed smoother MAPbI3 film after adding TBAI3. X-ray diffraction (XRD) measurements indicated that TBAI3 acted as a polar Lewis base, forming an adduct with the Lewis acid Pb2+, increasing PbI2 solubility, and enhancing crystal growth of perovskite. Current density–voltage (J–V) characteristics and transient photocurrent measurements showed that the TBAI3 dopant achieved an increase in short circuit current density (Jsc) and open circuit voltage (Voc) and a decrease in the charge transport time compared to the reference cell without any additive. Perovskite solar cell efficiency was enhanced from 11.18\% to 14.85\% by adding TBAI3 dopant to the PbI2 precursor.

@article{doi:10.1021/acs.jpcc.6b06799, abstract = { Perovskite solar cells offer tremendous potential for simple and low-cost solution-based fabrication with high power conversion efficiency. This work focused on adding an optimized amount of additive tetra-n-butylammonium triiodide (TBAI3) into the precursor PbI2 layer to improve the performance of perovskite solar cells. UV–vis absorption spectra exhibited an enhancement in the absorbance of perovskite films while AFM images showed smoother MAPbI3 film after adding TBAI3. X-ray diffraction (XRD) measurements indicated that TBAI3 acted as a polar Lewis base, forming an adduct with the Lewis acid Pb2+, increasing PbI2 solubility, and enhancing crystal growth of perovskite. Current density–voltage (J–V) characteristics and transient photocurrent measurements showed that the TBAI3 dopant achieved an increase in short circuit current density (Jsc) and open circuit voltage (Voc) and a decrease in the charge transport time compared to the reference cell without any additive. Perovskite solar cell efficiency was enhanced from 11.18\% to 14.85\% by adding TBAI3 dopant to the PbI2 precursor. }, added-at = {2017-01-19T10:48:22.000+0100}, author = {Mabrouk, Sally and Dubey, Ashish and Zhang, Wenfeng and Adhikari, Nirmal and Bahrami, Behzad and Hasan, Md Nazmul and Yang, Shangfeng and Qiao, Qiquan}, biburl = {https://www.bibsonomy.org/bibtex/264c828c665531ef54058c37416087338/gmue}, doi = {10.1021/acs.jpcc.6b06799}, eprint = {http://dx.doi.org/10.1021/acs.jpcc.6b06799}, interhash = {aa600b6836718403f545c652b9019fc4}, intrahash = {64c828c665531ef54058c37416087338}, journal = {The Journal of Physical Chemistry C}, keywords = {doping film-smoothing perovskite}, number = 43, pages = {24577-24582}, timestamp = {2017-01-19T10:48:22.000+0100}, title = {Increased Efficiency for Perovskite Photovoltaics via Doping the PbI2 Layer}, url = {http://dx.doi.org/10.1021/acs.jpcc.6b06799}, volume = 120, year = 2016 }