For　a　long　time,　solar　power　has　been　considered　a　clean　and　non-polluting　energy　source　because　it　absorbs　sunlight　without　consuming　other　energy　or　materials　and　does　not　emit　pollutants.　Nevertheless,　the　manufacturing　and　end-of-life　stages　of　solar　power　systems　leave　an　environmental　footprint　and　produce　pollutants.　Hence,　a　global　perspective　on　photovoltaic　(PV)　systems　using　life　cycle　assessment　methodology　is　necessary.　Here,　we　investigated　the　life　cycle　impacts　of　P-　and　N-type　PV　modules　in　terms　of　their　energy　consumption,　carbon　emissions,　and　human　toxicity　potential.　In　addition,　the　energy　payback　durations　of　Pand　N-type　PV　modules　were　computed.　In　this　study,　we　used　the　Life　Cycle　Assessment　Basic　Database　from　the　National　Engineering　Laboratory　of　Industrial　Big　Data　Application　Technology　at　Beijing　University　of　Technology　to　create　a　life　cycle　assessment　model　for　N-type　PV　modules.　Subsequently,　we　performed　a　life　cycle　assessment　of　Chinese　silicon　N-type-　and　P-type　PV　modules.　The　research　system　encompassed　the　production　processes　for　metallic　silicon　materials,　solar-grade　silicon　materials,　silicon　wafers,　cells　and　modules,　utilization,　recycling,　and　other　interrelated　processes.　We　found　that　the　production　and　processing　of　silicon-to-solargrade　polysilicon　feedstock　were　crucial　stages　that　significantly　affected　the　energy　consumption　and　environment　of　P-　and　N-type　PV　modules　in　China.　The　high　electricity　consumption　of　this　process,　combined　with　the　dominance　of　coal　power　in　China＇s　electricity　structure,　contributed　to　the　substantial　energy　consumption　and　environmental　impacts　of　the　PV　modules.　Therefore,　this　stage　is　critical　for　the　low-carbon　and　environmentally　sustainable　manufacturing　of　N-type　PV　modules　in　China.　Carbon　emissions　for　both　the　P-type　and　Ntype　PV　modules　were　lower　only　during　the　cell　production　phase　but　higher　during　the　other　stages　when　compared　to　the　P-type　and　N-type　PV　modules.　The　n-type　bifacial　PV　modules　yielded　the　highest　return　on　investment　in　terms　of　energy.　Different　regions　and　installation　types　have　a　substantial　impact　on　the　carbon　emissions　of　P-type　and　N-type　PV　modules.　Projections　indicate　that　the　potential　to　lower　carbon　emissions　from　n-type　PV　modules　will　increase　by　2060.