<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sun, Weihai</style></author><author><style face="normal" font="default" size="100%">Li, Yunlong</style></author><author><style face="normal" font="default" size="100%">Yan Xiao</style></author><author><style face="normal" font="default" size="100%">Zhao, Ziran</style></author><author><style face="normal" font="default" size="100%">Ye, Senyun</style></author><author><style face="normal" font="default" size="100%">Rao, Haixia</style></author><author><style face="normal" font="default" size="100%">Ting, Hungkit</style></author><author><style face="normal" font="default" size="100%">Bian, Zuqiang</style></author><author><style face="normal" font="default" size="100%">Xiao, Lixin</style></author><author><style face="normal" font="default" size="100%">Huang, Chunhui</style></author><author><style face="normal" font="default" size="100%">Chen, Zhijian</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An ammonia modified PEDOT: PSS for interfacial engineering in inverted planar perovskite solar cells</style></title><secondary-title><style face="normal" font="default" size="100%">ORGANIC ELECTRONICS</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2017</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JUL</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">46</style></volume><pages><style face="normal" font="default" size="100%">22-27</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) (PEDOT:PSS) is one of the most widely used hole transport layers (HTL) in inverted perovskite solar cells (PSCs) due to its simple solution-processed ability, high transparency, and conductivity. However, PEDOT: PSS-based devices suffer a lower open-circuit voltage (V-oc) than devices with the conventional structure. To address this issue, we fabricated ammonia-modified PEDOT: PSS films by simply doping PEDOT: PSS solution with different ratio of ammonia. The acidity of PEDOT: PSS can be neutralized by the doped ammonia, which inhibits the ion-exchange reaction between PSS-H and CH3NH3I, thus retarding the reduction of the work function for PEDOT: PSS to some extent. As a result, a superior power conversion efficiency (PCE) of 15.5% was obtained for the device based on the ammonia-doped PEDOT: PSS HTL than that of the pristine PEDOT: PSS-based device. We ascribe the PCE enhancement to the increased Voc and fill factor (FF), which is attributed not only to the better energy-level alignment between the ammonia-modified PEDOT: PSS film and perovskite layer but also to the increased grain size and crystallinity of perovskite film. (C) 2017 Published by Elsevier B.V.</style></abstract><custom7><style face="normal" font="default" size="100%">000402708700004</style></custom7></record></records></xml>